/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Addition03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:05:55,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:05:55,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:05:55,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:05:55,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:05:55,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:05:55,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:05:55,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:05:55,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:05:55,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:05:55,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:05:55,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:05:55,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:05:55,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:05:55,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:05:55,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:05:55,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:05:55,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:05:55,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:05:55,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:05:55,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:05:55,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:05:55,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:05:55,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:05:55,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:05:55,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:05:55,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:05:55,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:05:55,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:05:55,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:05:55,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:05:55,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:05:55,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:05:55,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:05:55,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:05:55,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:05:55,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:05:55,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:05:55,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:05:55,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:05:55,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:05:55,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:05:55,364 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:05:55,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:05:55,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:05:55,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:05:55,367 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:05:55,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:05:55,367 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:05:55,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:05:55,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:05:55,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:05:55,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:05:55,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:05:55,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:05:55,369 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:05:55,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:05:55,370 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:05:55,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:05:55,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:05:55,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:05:55,371 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:05:55,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:05:55,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:05:55,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:05:55,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:05:55,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:05:55,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:05:55,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:05:55,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:05:55,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:05:55,375 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:05:55,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:05:55,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:05:55,878 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:05:55,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:05:55,880 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:05:55,881 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition03-1.c [2020-09-25 11:05:55,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03e8401f2/c8a4927bf8db42578a784dfc820c5bdf/FLAG56c12f5ab [2020-09-25 11:05:56,441 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:05:56,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition03-1.c [2020-09-25 11:05:56,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03e8401f2/c8a4927bf8db42578a784dfc820c5bdf/FLAG56c12f5ab [2020-09-25 11:05:56,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03e8401f2/c8a4927bf8db42578a784dfc820c5bdf [2020-09-25 11:05:56,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:05:56,814 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:05:56,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:05:56,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:05:56,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:05:56,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:05:56" (1/1) ... [2020-09-25 11:05:56,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:56, skipping insertion in model container [2020-09-25 11:05:56,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:05:56" (1/1) ... [2020-09-25 11:05:56,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:05:56,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:05:57,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:05:57,125 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:05:57,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:05:57,156 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:05:57,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:57 WrapperNode [2020-09-25 11:05:57,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:05:57,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:05:57,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:05:57,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:05:57,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:57" (1/1) ... [2020-09-25 11:05:57,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:57" (1/1) ... [2020-09-25 11:05:57,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:57" (1/1) ... [2020-09-25 11:05:57,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:57" (1/1) ... [2020-09-25 11:05:57,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:57" (1/1) ... [2020-09-25 11:05:57,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:57" (1/1) ... [2020-09-25 11:05:57,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:57" (1/1) ... [2020-09-25 11:05:57,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:05:57,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:05:57,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:05:57,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:05:57,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:05:57,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:05:57,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:05:57,347 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-09-25 11:05:57,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:05:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:05:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:05:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-09-25 11:05:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:05:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:05:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:05:57,574 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:05:57,574 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:05:57,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:05:57 BoogieIcfgContainer [2020-09-25 11:05:57,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:05:57,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:05:57,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:05:57,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:05:57,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:05:56" (1/3) ... [2020-09-25 11:05:57,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1229a89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:05:57, skipping insertion in model container [2020-09-25 11:05:57,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:57" (2/3) ... [2020-09-25 11:05:57,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1229a89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:05:57, skipping insertion in model container [2020-09-25 11:05:57,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:05:57" (3/3) ... [2020-09-25 11:05:57,588 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2020-09-25 11:05:57,600 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:05:57,609 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:05:57,631 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:05:57,658 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:05:57,659 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:05:57,659 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:05:57,659 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:05:57,659 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:05:57,659 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:05:57,660 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:05:57,660 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:05:57,679 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-25 11:05:57,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 11:05:57,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:57,689 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] [2020-09-25 11:05:57,689 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:57,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:57,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1218957033, now seen corresponding path program 1 times [2020-09-25 11:05:57,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:57,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062559423] [2020-09-25 11:05:57,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:57,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:57,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:57,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:05:57,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:57,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 11:05:57,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:57,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:57,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:05:57,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:05:57,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:05:57,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:05:58,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:05:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:58,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:58,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:05:58,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:58,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:05:58,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:58,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:58,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:58,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:58,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:58,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:05:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:58,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:58,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:58,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:05:58,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:58,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 11:05:58,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:58,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:58,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:05:58,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:58,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:05:58,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:05:58,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062559423] [2020-09-25 11:05:58,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:05:58,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:05:58,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101770307] [2020-09-25 11:05:58,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:05:58,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:05:58,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:05:58,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:05:58,299 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-09-25 11:05:58,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:05:58,421 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-09-25 11:05:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:05:58,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-09-25 11:05:58,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:05:58,437 INFO L225 Difference]: With dead ends: 53 [2020-09-25 11:05:58,438 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 11:05:58,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:05:58,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 11:05:58,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 11:05:58,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 11:05:58,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-09-25 11:05:58,501 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 22 [2020-09-25 11:05:58,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:05:58,501 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-09-25 11:05:58,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:05:58,502 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-09-25 11:05:58,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 11:05:58,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:58,505 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-09-25 11:05:58,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:05:58,506 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:58,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:58,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1438677315, now seen corresponding path program 1 times [2020-09-25 11:05:58,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:58,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19192874] [2020-09-25 11:05:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:58,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:58,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:58,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 11:05:58,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:58,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-25 11:05:58,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:58,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:58,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:05:58,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:05:58,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:05:58,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:58,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:05:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:58,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:58,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:58,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:05:58,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:58,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:05:58,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:58,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:58,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:58,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:58,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:58,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:58,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:05:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:58,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:58,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:58,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 11:05:58,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:58,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 11:05:58,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:58,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:05:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:05:58,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:59,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:05:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:59,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:59,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:59,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:05:59,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:59,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:05:59,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:59,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:05:59,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:59,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:05:59,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:59,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 11:05:59,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19192874] [2020-09-25 11:05:59,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:05:59,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:05:59,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948425543] [2020-09-25 11:05:59,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:05:59,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:05:59,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:05:59,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:05:59,053 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 6 states. [2020-09-25 11:05:59,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:05:59,155 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-09-25 11:05:59,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:05:59,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-09-25 11:05:59,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:05:59,158 INFO L225 Difference]: With dead ends: 48 [2020-09-25 11:05:59,158 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 11:05:59,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:05:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 11:05:59,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 11:05:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 11:05:59,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 11:05:59,185 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 32 [2020-09-25 11:05:59,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:05:59,186 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 11:05:59,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:05:59,186 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 11:05:59,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 11:05:59,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:59,189 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-09-25 11:05:59,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:05:59,189 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:59,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:59,190 INFO L82 PathProgramCache]: Analyzing trace with hash -305631715, now seen corresponding path program 1 times [2020-09-25 11:05:59,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:59,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171459060] [2020-09-25 11:05:59,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:59,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:59,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:59,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:59,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:59,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 11:05:59,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:05:59,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 11:05:59,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:59,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:05:59,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:05:59,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 11:05:59,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:05:59,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:05:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:59,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:59,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:59,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:05:59,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:59,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:05:59,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:59,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:59,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:59,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:05:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:59,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:59,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:59,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:59,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:59,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:05:59,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:05:59,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 11:05:59,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:59,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:05:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:05:59,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:59,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:05:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:59,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:59,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:59,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:59,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:05:59,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:05:59,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 11:05:59,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:59,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:05:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:05:59,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 11:05:59,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171459060] [2020-09-25 11:05:59,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:05:59,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:05:59,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227266188] [2020-09-25 11:05:59,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:05:59,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:05:59,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:05:59,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:05:59,687 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 11:05:59,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:05:59,811 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2020-09-25 11:05:59,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:05:59,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 11:05:59,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:05:59,814 INFO L225 Difference]: With dead ends: 89 [2020-09-25 11:05:59,815 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 11:05:59,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:05:59,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 11:05:59,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2020-09-25 11:05:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 11:05:59,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-09-25 11:05:59,828 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 33 [2020-09-25 11:05:59,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:05:59,829 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-09-25 11:05:59,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:05:59,829 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-09-25 11:05:59,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 11:05:59,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:59,831 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-09-25 11:05:59,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:05:59,832 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:59,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:59,833 INFO L82 PathProgramCache]: Analyzing trace with hash 967575145, now seen corresponding path program 2 times [2020-09-25 11:05:59,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:59,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223828826] [2020-09-25 11:05:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:59,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:59,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:59,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 11:05:59,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:59,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 11:05:59,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:59,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:59,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:05:59,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:05:59,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:05:59,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:00,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:00,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:00,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:00,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:00,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:00,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:00,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:00,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:00,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:00,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:00,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:00,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:00,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:06:00,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:00,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 11:06:00,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:00,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:06:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:00,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:06:00,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:00,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:00,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:00,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:00,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 11:06:00,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:00,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 11:06:00,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:00,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:06:00,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:00,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:00,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:00,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:00,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:00,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:00,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:06:00,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:00,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:00,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:06:00,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223828826] [2020-09-25 11:06:00,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:00,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:06:00,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92898541] [2020-09-25 11:06:00,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:06:00,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:00,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:06:00,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:06:00,322 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 8 states. [2020-09-25 11:06:00,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:00,474 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-09-25 11:06:00,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:06:00,475 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-09-25 11:06:00,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:00,477 INFO L225 Difference]: With dead ends: 67 [2020-09-25 11:06:00,477 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 11:06:00,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:06:00,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 11:06:00,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-09-25 11:06:00,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 11:06:00,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-09-25 11:06:00,488 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 42 [2020-09-25 11:06:00,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:00,489 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-09-25 11:06:00,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:06:00,489 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-09-25 11:06:00,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 11:06:00,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:00,491 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-09-25 11:06:00,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:06:00,492 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:00,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:00,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1539519487, now seen corresponding path program 2 times [2020-09-25 11:06:00,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:00,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620984760] [2020-09-25 11:06:00,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:00,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:00,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:00,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:00,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:01,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:01,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 11:06:01,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:01,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-09-25 11:06:01,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:01,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:01,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:06:01,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:06:01,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 11:06:01,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:01,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:01,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:01,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:01,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:01,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:01,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:01,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:01,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:01,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:01,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:01,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:01,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:01,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:01,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:01,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:01,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:06:01,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:01,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-09-25 11:06:01,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:01,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:06:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:06:01,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:01,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:01,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:01,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:02,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:02,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:02,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:06:02,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 11:06:02,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:02,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:02,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:02,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:02,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:02,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:02,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:02,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:02,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:02,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:02,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:02,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:06:02,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:02,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:02,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:02,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:02,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:02,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 11:06:02,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620984760] [2020-09-25 11:06:02,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:02,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:06:02,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698155315] [2020-09-25 11:06:02,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:06:02,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:02,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:06:02,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:06:02,091 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 8 states. [2020-09-25 11:06:02,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:02,217 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-09-25 11:06:02,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:06:02,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-09-25 11:06:02,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:02,219 INFO L225 Difference]: With dead ends: 72 [2020-09-25 11:06:02,219 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 11:06:02,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:06:02,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 11:06:02,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 11:06:02,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 11:06:02,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-25 11:06:02,230 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 43 [2020-09-25 11:06:02,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:02,231 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-25 11:06:02,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:06:02,231 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-25 11:06:02,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 11:06:02,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:02,233 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:02,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:06:02,234 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:02,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:02,234 INFO L82 PathProgramCache]: Analyzing trace with hash -321617853, now seen corresponding path program 3 times [2020-09-25 11:06:02,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:02,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935402527] [2020-09-25 11:06:02,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:02,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:02,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:02,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 11:06:02,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:02,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 11:06:02,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:02,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:02,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:06:02,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:06:02,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:06:02,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:02,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:02,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:02,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:02,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:02,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:02,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:02,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:02,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:02,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:02,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:02,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:02,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:02,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:06:02,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:02,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 11:06:02,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:02,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:06:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 11:06:02,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:02,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:02,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:02,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:02,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:06:02,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:02,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 11:06:02,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:02,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:06:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:06:02,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:02,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:02,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:02,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:02,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 11:06:02,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:02,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 11:06:02,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:02,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:02,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:02,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:02,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:06:02,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:02,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:02,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:02,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:02,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:02,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:02,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:06:02,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:02,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:02,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:02,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:02,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:02,986 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 11:06:02,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935402527] [2020-09-25 11:06:02,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:02,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:06:02,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653636093] [2020-09-25 11:06:02,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:06:02,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:02,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:06:02,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:06:02,989 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 10 states. [2020-09-25 11:06:03,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:03,150 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2020-09-25 11:06:03,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:06:03,151 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-09-25 11:06:03,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:03,152 INFO L225 Difference]: With dead ends: 77 [2020-09-25 11:06:03,152 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 11:06:03,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:06:03,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 11:06:03,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2020-09-25 11:06:03,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 11:06:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2020-09-25 11:06:03,163 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 52 [2020-09-25 11:06:03,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:03,163 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2020-09-25 11:06:03,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:06:03,163 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2020-09-25 11:06:03,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 11:06:03,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:03,166 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:03,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:06:03,166 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:03,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:03,166 INFO L82 PathProgramCache]: Analyzing trace with hash 259499357, now seen corresponding path program 3 times [2020-09-25 11:06:03,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:03,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049991589] [2020-09-25 11:06:03,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:03,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:03,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:03,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:03,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:03,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:04,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 11:06:04,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:06:04,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-09-25 11:06:04,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:04,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:06:04,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:06:04,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 11:06:04,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:04,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:04,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:04,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:04,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:04,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:04,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:04,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:04,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:04,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:04,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:04,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:04,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:05,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:06:05,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:06:05,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1067 [2020-09-25 11:06:05,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:05,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:06:05,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:05,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:06:05,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:05,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:05,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:06:05,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:05,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-09-25 11:06:05,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:05,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:06:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:06:05,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:05,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:05,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:05,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:05,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:06:05,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 11:06:05,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:05,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:05,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:05,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:05,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:05,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:05,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:05,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:05,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:05,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:06:05,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:05,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:05,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:05,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:05,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:05,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 11:06:05,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049991589] [2020-09-25 11:06:05,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:05,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:06:05,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688832534] [2020-09-25 11:06:05,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:06:05,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:05,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:06:05,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:06:05,984 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 9 states. [2020-09-25 11:06:06,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:06,118 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2020-09-25 11:06:06,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:06:06,118 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-09-25 11:06:06,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:06,120 INFO L225 Difference]: With dead ends: 82 [2020-09-25 11:06:06,120 INFO L226 Difference]: Without dead ends: 76 [2020-09-25 11:06:06,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:06:06,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-25 11:06:06,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2020-09-25 11:06:06,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 11:06:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2020-09-25 11:06:06,129 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 53 [2020-09-25 11:06:06,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:06,129 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2020-09-25 11:06:06,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:06:06,130 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2020-09-25 11:06:06,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 11:06:06,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:06,131 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:06,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:06:06,131 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:06,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:06,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1776668137, now seen corresponding path program 4 times [2020-09-25 11:06:06,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:06,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899479384] [2020-09-25 11:06:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:06,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:06,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:06,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:06:06,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-09-25 11:06:06,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:06,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:06:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 11:06:06,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:06,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:06,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:06,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:06,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:06,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:06,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:06,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:06,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:06,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:06,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:06,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:06,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 11:06:06,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:06,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 11:06:06,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:06,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:06:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:06,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:06,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:06,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:06,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:06:06,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:06,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 11:06:06,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:06,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:06,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:06:06,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:06,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 11:06:06,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:06,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:06,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:06,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:06,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:06:06,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:06,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 11:06:06,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:06,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:06,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:06:06,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:06,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:06:06,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:07,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:07,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:07,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:07,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 11:06:07,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:07,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 11:06:07,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:07,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:07,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:07,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:07,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:06:07,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:07,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:07,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:07,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:07,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:07,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:07,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:06:07,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:07,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:07,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:07,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:07,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:07,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 11:06:07,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899479384] [2020-09-25 11:06:07,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:07,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:06:07,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945848766] [2020-09-25 11:06:07,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:06:07,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:07,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:06:07,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:06:07,119 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 10 states. [2020-09-25 11:06:07,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:07,269 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2020-09-25 11:06:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:06:07,269 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-09-25 11:06:07,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:07,271 INFO L225 Difference]: With dead ends: 87 [2020-09-25 11:06:07,271 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 11:06:07,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:06:07,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 11:06:07,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2020-09-25 11:06:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 11:06:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2020-09-25 11:06:07,280 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 62 [2020-09-25 11:06:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:07,280 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2020-09-25 11:06:07,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:06:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2020-09-25 11:06:07,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 11:06:07,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:07,282 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:07,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:06:07,282 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:07,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:07,283 INFO L82 PathProgramCache]: Analyzing trace with hash 318406209, now seen corresponding path program 4 times [2020-09-25 11:06:07,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:07,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787272308] [2020-09-25 11:06:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:07,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:07,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:07,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:07,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:07,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:07,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:09,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:09,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 11:06:09,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:06:09,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2135 [2020-09-25 11:06:09,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:09,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:09,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:09,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:06:09,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 11:06:09,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:09,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:09,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:09,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:09,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:09,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:09,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:09,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:09,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:09,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:09,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:09,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:09,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:09,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:09,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:09,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:09,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:10,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:11,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:11,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:06:11,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:06:11,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1645 [2020-09-25 11:06:11,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:11,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:06:11,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:11,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:11,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:11,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:11,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:11,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:11,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:11,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:11,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:06:11,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:06:11,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-09-25 11:06:11,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:11,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:11,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:06:11,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:11,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:06:11,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:12,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:12,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:12,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:12,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:12,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:12,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:12,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:06:12,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:12,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-09-25 11:06:12,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:12,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:12,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:06:12,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:12,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:06:12,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:12,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:12,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:12,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:12,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:12,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:12,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:12,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:06:12,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 11:06:12,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:12,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:12,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:12,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:12,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:12,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:12,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:12,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:12,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:12,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:12,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 11:06:12,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:12,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:12,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:12,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:12,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:12,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:12,613 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 11:06:12,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787272308] [2020-09-25 11:06:12,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:12,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:06:12,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477456372] [2020-09-25 11:06:12,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:06:12,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:12,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:06:12,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:06:12,625 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand 10 states. [2020-09-25 11:06:12,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:12,812 INFO L93 Difference]: Finished difference Result 92 states and 104 transitions. [2020-09-25 11:06:12,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:06:12,813 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-09-25 11:06:12,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:12,817 INFO L225 Difference]: With dead ends: 92 [2020-09-25 11:06:12,817 INFO L226 Difference]: Without dead ends: 86 [2020-09-25 11:06:12,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:06:12,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-25 11:06:12,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2020-09-25 11:06:12,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 11:06:12,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2020-09-25 11:06:12,836 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 63 [2020-09-25 11:06:12,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:12,838 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2020-09-25 11:06:12,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:06:12,839 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2020-09-25 11:06:12,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 11:06:12,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:12,841 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:12,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:06:12,842 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:12,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:12,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1043024061, now seen corresponding path program 5 times [2020-09-25 11:06:12,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:12,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999525470] [2020-09-25 11:06:12,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:12,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:13,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:13,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 11:06:13,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:13,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-25 11:06:13,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:13,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:13,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:06:13,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:06:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 11:06:13,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:13,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:13,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:13,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:13,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:13,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:13,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:13,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:13,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:13,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:13,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:13,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:13,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:13,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 11:06:13,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:13,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 11:06:13,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:13,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:06:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 11:06:13,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:13,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:13,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:13,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:13,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 11:06:13,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:13,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 11:06:13,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:13,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:06:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:06:13,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:13,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:13,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:13,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:13,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:06:13,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:13,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 11:06:13,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:13,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:06:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 11:06:13,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:13,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:14,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:14,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:14,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:06:14,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 11:06:14,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:14,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:06:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:06:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:14,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:14,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:14,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:14,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 11:06:14,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:14,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 11:06:14,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:14,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:14,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:14,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:14,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:06:14,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:14,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:14,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:14,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:14,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:14,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:14,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:06:14,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:14,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:14,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:14,220 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 4 proven. 69 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-09-25 11:06:14,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999525470] [2020-09-25 11:06:14,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:14,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:06:14,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247543814] [2020-09-25 11:06:14,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:06:14,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:14,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:06:14,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:06:14,223 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 11 states. [2020-09-25 11:06:14,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:14,376 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2020-09-25 11:06:14,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:06:14,377 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2020-09-25 11:06:14,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:14,378 INFO L225 Difference]: With dead ends: 97 [2020-09-25 11:06:14,378 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 11:06:14,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:06:14,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 11:06:14,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2020-09-25 11:06:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 11:06:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2020-09-25 11:06:14,386 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 72 [2020-09-25 11:06:14,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:14,387 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2020-09-25 11:06:14,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:06:14,387 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2020-09-25 11:06:14,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 11:06:14,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:14,388 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:14,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 11:06:14,388 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:14,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:14,389 INFO L82 PathProgramCache]: Analyzing trace with hash 2031082653, now seen corresponding path program 5 times [2020-09-25 11:06:14,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:14,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948520914] [2020-09-25 11:06:14,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:14,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:14,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:14,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:14,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:14,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:14,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:15,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:17,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:17,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 11:06:17,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:06:17,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3468 [2020-09-25 11:06:17,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:17,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:06:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:06:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 11:06:17,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:17,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:17,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:17,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:17,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:17,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:17,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:17,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:17,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:17,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:17,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:17,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:17,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:17,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:17,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:17,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:18,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:18,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:18,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:20,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:20,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 11:06:20,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:06:20,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2197 [2020-09-25 11:06:20,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:20,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:06:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 11:06:20,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:20,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:20,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:20,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:20,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:20,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:20,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:20,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:21,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:21,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:06:21,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:06:21,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1470 [2020-09-25 11:06:21,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:21,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:21,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:06:21,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:21,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:06:21,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:21,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:21,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:21,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:21,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:21,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:22,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:06:22,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:06:22,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-09-25 11:06:22,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:22,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:06:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:06:22,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:22,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:22,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:22,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:06:22,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:22,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-09-25 11:06:22,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:22,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:22,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:06:22,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:22,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:06:22,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:22,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:22,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:22,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:22,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:06:22,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 11:06:22,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:22,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:22,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:22,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:22,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:22,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:22,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:22,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:22,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:22,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:22,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:06:22,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:22,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:22,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:22,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 78 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-09-25 11:06:22,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948520914] [2020-09-25 11:06:22,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:22,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:06:22,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048465448] [2020-09-25 11:06:22,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:06:22,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:22,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:06:22,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:06:22,928 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand 11 states. [2020-09-25 11:06:23,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:23,071 INFO L93 Difference]: Finished difference Result 102 states and 114 transitions. [2020-09-25 11:06:23,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:06:23,071 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-09-25 11:06:23,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:23,073 INFO L225 Difference]: With dead ends: 102 [2020-09-25 11:06:23,073 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 11:06:23,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:06:23,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 11:06:23,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 69. [2020-09-25 11:06:23,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-25 11:06:23,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-09-25 11:06:23,079 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 73 [2020-09-25 11:06:23,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:23,080 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-09-25 11:06:23,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:06:23,080 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-09-25 11:06:23,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 11:06:23,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:23,081 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:23,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 11:06:23,081 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:23,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:23,082 INFO L82 PathProgramCache]: Analyzing trace with hash -473356951, now seen corresponding path program 6 times [2020-09-25 11:06:23,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:23,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438467996] [2020-09-25 11:06:23,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:23,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:23,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-25 11:06:23,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:23,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-09-25 11:06:23,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:23,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:23,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:06:23,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:06:23,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:06:23,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:23,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:23,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:23,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:23,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:23,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:23,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:23,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:23,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:23,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:23,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:23,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 11:06:23,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-09-25 11:06:23,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:23,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:06:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 11:06:23,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:23,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:24,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 11:06:24,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:24,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 11:06:24,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:24,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:06:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:24,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 11:06:24,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:24,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:24,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:24,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 11:06:24,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:24,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 11:06:24,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:24,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:06:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:06:24,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:24,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:24,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:24,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:06:24,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:24,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 11:06:24,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:24,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:06:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 11:06:24,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:24,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:24,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:24,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:06:24,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:24,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 11:06:24,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:24,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:24,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:06:24,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:24,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:06:24,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:24,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:24,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:24,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 11:06:24,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:24,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 11:06:24,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:24,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:24,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:24,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:24,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:06:24,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:24,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:24,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:24,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:24,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:24,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:06:24,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:24,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:24,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 20 proven. 93 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 11:06:24,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438467996] [2020-09-25 11:06:24,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:24,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:06:24,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366118329] [2020-09-25 11:06:24,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:06:24,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:24,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:06:24,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:06:24,671 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 12 states. [2020-09-25 11:06:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:24,874 INFO L93 Difference]: Finished difference Result 107 states and 119 transitions. [2020-09-25 11:06:24,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:06:24,875 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-09-25 11:06:24,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:24,876 INFO L225 Difference]: With dead ends: 107 [2020-09-25 11:06:24,877 INFO L226 Difference]: Without dead ends: 101 [2020-09-25 11:06:24,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:06:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-25 11:06:24,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2020-09-25 11:06:24,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 11:06:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2020-09-25 11:06:24,889 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 82 [2020-09-25 11:06:24,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:24,890 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2020-09-25 11:06:24,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:06:24,890 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2020-09-25 11:06:24,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 11:06:24,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:24,891 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:24,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 11:06:24,891 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:24,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:24,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1726967937, now seen corresponding path program 6 times [2020-09-25 11:06:24,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:24,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168873046] [2020-09-25 11:06:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:24,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:26,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:29,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 11:06:29,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:06:29,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:06:29,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:29,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:06:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:06:29,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 11:06:29,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:29,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:29,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:29,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:29,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:29,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:29,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:29,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:29,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:29,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:29,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:29,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:29,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:31,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:33,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:33,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:06:33,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:06:33,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3924 [2020-09-25 11:06:33,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:33,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:33,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:06:33,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:33,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 11:06:33,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:33,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:33,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:33,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:33,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:34,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:34,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:34,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:36,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:36,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 11:06:36,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:06:36,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2511 [2020-09-25 11:06:36,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:36,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:36,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:06:36,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:36,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 11:06:36,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:36,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:36,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:36,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:36,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:36,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:36,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:36,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:37,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:37,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:06:37,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:06:37,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1544 [2020-09-25 11:06:37,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:37,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:37,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:06:37,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:37,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:06:37,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:37,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:38,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:06:38,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:06:38,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-09-25 11:06:38,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:38,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:06:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:06:38,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:38,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:38,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:39,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:39,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:06:39,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:39,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-25 11:06:39,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:39,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:39,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:06:39,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:39,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:06:39,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:39,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:39,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:39,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:39,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:39,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:39,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:06:39,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 11:06:39,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:39,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:39,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:39,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:39,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:39,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:39,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:39,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:39,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:39,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:06:39,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:39,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:39,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 9 proven. 95 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-09-25 11:06:39,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168873046] [2020-09-25 11:06:39,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:39,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:06:39,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475497757] [2020-09-25 11:06:39,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:06:39,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:39,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:06:39,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:06:39,214 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand 12 states. [2020-09-25 11:06:39,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:39,396 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2020-09-25 11:06:39,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:06:39,396 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-09-25 11:06:39,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:39,397 INFO L225 Difference]: With dead ends: 112 [2020-09-25 11:06:39,398 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 11:06:39,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:06:39,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 11:06:39,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 74. [2020-09-25 11:06:39,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 11:06:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-09-25 11:06:39,403 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 83 [2020-09-25 11:06:39,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:39,403 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-09-25 11:06:39,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:06:39,404 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-09-25 11:06:39,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-25 11:06:39,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:39,405 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:39,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 11:06:39,405 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:39,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:39,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1366105667, now seen corresponding path program 7 times [2020-09-25 11:06:39,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:39,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062887601] [2020-09-25 11:06:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:39,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:39,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:39,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 11:06:39,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:39,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-09-25 11:06:39,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:39,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:39,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:06:39,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:06:39,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 11:06:39,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:39,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:39,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:39,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:39,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:39,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:39,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:39,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:39,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:39,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:40,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:40,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 11:06:40,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-09-25 11:06:40,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:40,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:06:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 11:06:40,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:40,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:40,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:40,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:40,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 11:06:40,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:40,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-25 11:06:40,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:40,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:40,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:06:40,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 11:06:40,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:40,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:40,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:40,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:40,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 11:06:40,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:40,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 11:06:40,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:40,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:06:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 11:06:40,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:40,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:40,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:40,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:40,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 11:06:40,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:40,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 11:06:40,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:40,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:40,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:06:40,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:40,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:06:40,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:41,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:41,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:41,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:06:41,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:41,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 11:06:41,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:41,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:41,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:06:41,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:41,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 11:06:41,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:41,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:41,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:06:41,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:41,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 11:06:41,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:41,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:41,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:06:41,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:41,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:06:41,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:41,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:41,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:41,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 11:06:41,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:41,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 11:06:41,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:41,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:41,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:41,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:41,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:06:41,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:41,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:41,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:41,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:41,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:41,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:06:41,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:41,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:41,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 12 proven. 131 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-09-25 11:06:41,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062887601] [2020-09-25 11:06:41,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:41,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:06:41,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922058694] [2020-09-25 11:06:41,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:06:41,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:41,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:06:41,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:06:41,424 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 13 states. [2020-09-25 11:06:41,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:41,652 INFO L93 Difference]: Finished difference Result 117 states and 129 transitions. [2020-09-25 11:06:41,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:06:41,653 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 92 [2020-09-25 11:06:41,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:41,654 INFO L225 Difference]: With dead ends: 117 [2020-09-25 11:06:41,655 INFO L226 Difference]: Without dead ends: 111 [2020-09-25 11:06:41,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:06:41,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-25 11:06:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 86. [2020-09-25 11:06:41,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 11:06:41,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-09-25 11:06:41,669 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 92 [2020-09-25 11:06:41,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:41,670 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-09-25 11:06:41,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:06:41,670 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-09-25 11:06:41,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-25 11:06:41,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:41,673 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:41,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 11:06:41,674 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:41,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:41,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1311314909, now seen corresponding path program 7 times [2020-09-25 11:06:41,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:41,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119144593] [2020-09-25 11:06:41,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:41,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:42,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:46,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 11:06:46,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:06:46,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:06:46,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:46,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:06:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:06:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 11:06:46,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:46,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:46,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:46,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:46,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:46,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:46,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:46,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:46,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:46,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:46,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:47,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:49,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:51,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:51,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 11:06:51,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:06:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:06:51,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:51,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:06:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 11:06:51,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:51,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:51,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:51,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:51,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:51,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:51,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:51,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking...