/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 SequenceOfStatements --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-programs/copysome1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:03:46,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:03:46,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:03:46,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:03:46,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:03:46,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:03:46,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:03:46,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:03:46,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:03:46,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:03:46,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:03:46,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:03:46,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:03:46,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:03:46,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:03:46,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:03:46,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:03:46,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:03:46,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:03:46,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:03:46,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:03:46,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:03:46,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:03:46,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:03:46,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:03:46,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:03:46,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:03:46,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:03:46,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:03:46,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:03:46,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:03:46,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:03:46,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:03:46,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:03:46,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:03:46,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:03:46,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:03:46,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:03:46,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:03:46,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:03:46,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:03:46,356 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 [2020-10-14 00:03:46,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:03:46,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:03:46,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:03:46,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:03:46,411 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:03:46,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:03:46,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:03:46,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:03:46,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:03:46,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:03:46,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:03:46,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:03:46,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:03:46,413 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:03:46,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:03:46,413 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:03:46,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:03:46,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:03:46,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:03:46,418 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:03:46,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:03:46,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:03:46,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:03:46,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:03:46,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:03:46,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:03:46,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:03:46,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:03:46,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:03:46,420 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 -> SequenceOfStatements 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:03:46,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:03:46,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:03:46,774 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:03:46,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:03:46,777 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:03:46,777 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/copysome1-1.i [2020-10-14 00:03:46,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62da92c73/dc40d5fae7c74437a26c31915c79be47/FLAGcbe5de4fa [2020-10-14 00:03:47,313 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:03:47,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-programs/copysome1-1.i [2020-10-14 00:03:47,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62da92c73/dc40d5fae7c74437a26c31915c79be47/FLAGcbe5de4fa [2020-10-14 00:03:47,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62da92c73/dc40d5fae7c74437a26c31915c79be47 [2020-10-14 00:03:47,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:03:47,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:03:47,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:03:47,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:03:47,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:03:47,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:03:47" (1/1) ... [2020-10-14 00:03:47,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718a405b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:03:47, skipping insertion in model container [2020-10-14 00:03:47,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:03:47" (1/1) ... [2020-10-14 00:03:47,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:03:47,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:03:47,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:03:47,915 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:03:47,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:03:47,955 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:03:47,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:03:47 WrapperNode [2020-10-14 00:03:47,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:03:47,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:03:47,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:03:47,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:03:48,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:03:47" (1/1) ... [2020-10-14 00:03:48,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:03:47" (1/1) ... [2020-10-14 00:03:48,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:03:47" (1/1) ... [2020-10-14 00:03:48,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:03:47" (1/1) ... [2020-10-14 00:03:48,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:03:47" (1/1) ... [2020-10-14 00:03:48,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:03:47" (1/1) ... [2020-10-14 00:03:48,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:03:47" (1/1) ... [2020-10-14 00:03:48,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:03:48,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:03:48,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:03:48,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:03:48,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:03:47" (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 [2020-10-14 00:03:48,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:03:48,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:03:48,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:03:48,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:03:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:03:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:03:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:03:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:03:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 00:03:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 00:03:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 00:03:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 00:03:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:03:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:03:48,394 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:03:48,395 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 00:03:48,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:03:48 BoogieIcfgContainer [2020-10-14 00:03:48,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:03:48,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:03:48,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:03:48,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:03:48,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:03:47" (1/3) ... [2020-10-14 00:03:48,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6338a410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:03:48, skipping insertion in model container [2020-10-14 00:03:48,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:03:47" (2/3) ... [2020-10-14 00:03:48,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6338a410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:03:48, skipping insertion in model container [2020-10-14 00:03:48,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:03:48" (3/3) ... [2020-10-14 00:03:48,410 INFO L109 eAbstractionObserver]: Analyzing ICFG copysome1-1.i [2020-10-14 00:03:48,423 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:03:48,432 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:03:48,461 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:03:48,514 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:03:48,514 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:03:48,514 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:03:48,515 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:03:48,515 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:03:48,515 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:03:48,515 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:03:48,515 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:03:48,540 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-14 00:03:48,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 00:03:48,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:03:48,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:03:48,547 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:03:48,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:03:48,553 INFO L82 PathProgramCache]: Analyzing trace with hash -908266250, now seen corresponding path program 1 times [2020-10-14 00:03:48,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:03:48,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708724396] [2020-10-14 00:03:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:03:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:48,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:48,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:48,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:48,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 00:03:48,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:03:48,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 00:03:48,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:48,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 00:03:48,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:48,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:03:48,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:03:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:48,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:48,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:03:48,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:48,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:03:48,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:48,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:48,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:48,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:48,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:03:48,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708724396] [2020-10-14 00:03:48,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:03:48,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:03:48,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823280160] [2020-10-14 00:03:48,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:03:48,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:03:48,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:03:48,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:03:48,944 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-10-14 00:03:49,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:03:49,037 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2020-10-14 00:03:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:03:49,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-14 00:03:49,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:03:49,049 INFO L225 Difference]: With dead ends: 50 [2020-10-14 00:03:49,049 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 00:03:49,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:03:49,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 00:03:49,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-14 00:03:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-14 00:03:49,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-10-14 00:03:49,088 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2020-10-14 00:03:49,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:03:49,089 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-10-14 00:03:49,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:03:49,089 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-10-14 00:03:49,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 00:03:49,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:03:49,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:03:49,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:03:49,091 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:03:49,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:03:49,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1720229721, now seen corresponding path program 1 times [2020-10-14 00:03:49,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:03:49,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254365263] [2020-10-14 00:03:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:03:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:49,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:49,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:49,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:49,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 00:03:49,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:03:49,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 00:03:49,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:49,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:49,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:49,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:03:49,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:03:49,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:49,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:03:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:49,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:49,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:49,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:03:49,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:49,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:03:49,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:49,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:03:49,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254365263] [2020-10-14 00:03:49,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:03:49,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:03:49,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633170943] [2020-10-14 00:03:49,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:03:49,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:03:49,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:03:49,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:03:49,371 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 4 states. [2020-10-14 00:03:49,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:03:49,472 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-14 00:03:49,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:03:49,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-14 00:03:49,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:03:49,475 INFO L225 Difference]: With dead ends: 45 [2020-10-14 00:03:49,475 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 00:03:49,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:03:49,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 00:03:49,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2020-10-14 00:03:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 00:03:49,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-14 00:03:49,484 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2020-10-14 00:03:49,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:03:49,485 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-14 00:03:49,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:03:49,485 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-14 00:03:49,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 00:03:49,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:03:49,486 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] [2020-10-14 00:03:49,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:03:49,487 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:03:49,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:03:49,487 INFO L82 PathProgramCache]: Analyzing trace with hash -2103920742, now seen corresponding path program 1 times [2020-10-14 00:03:49,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:03:49,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182904160] [2020-10-14 00:03:49,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:03:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:49,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:49,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:49,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:49,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:49,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:50,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:50,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 00:03:50,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:03:50,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-10-14 00:03:50,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:50,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:50,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:03:50,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:03:50,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 00:03:50,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:50,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:03:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:50,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:50,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:50,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:03:50,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:50,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:03:50,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:50,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:50,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:50,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:50,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:50,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:03:50,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182904160] [2020-10-14 00:03:50,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:03:50,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:03:50,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394994356] [2020-10-14 00:03:50,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:03:50,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:03:50,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:03:50,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:03:50,134 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 6 states. [2020-10-14 00:03:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:03:50,250 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2020-10-14 00:03:50,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:03:50,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-14 00:03:50,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:03:50,253 INFO L225 Difference]: With dead ends: 51 [2020-10-14 00:03:50,254 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 00:03:50,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:03:50,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 00:03:50,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-10-14 00:03:50,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 00:03:50,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-14 00:03:50,264 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 21 [2020-10-14 00:03:50,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:03:50,265 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-14 00:03:50,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:03:50,265 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-14 00:03:50,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 00:03:50,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:03:50,266 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] [2020-10-14 00:03:50,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:03:50,267 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:03:50,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:03:50,267 INFO L82 PathProgramCache]: Analyzing trace with hash -452595955, now seen corresponding path program 1 times [2020-10-14 00:03:50,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:03:50,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748574618] [2020-10-14 00:03:50,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:03:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:50,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:50,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:50,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:51,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:51,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 00:03:51,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:03:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 965 [2020-10-14 00:03:51,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:51,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:03:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 00:03:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:03:51,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:51,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:03:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:51,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:51,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:51,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:03:51,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:51,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:03:51,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:51,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:51,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:51,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:51,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:51,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:51,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 00:03:51,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748574618] [2020-10-14 00:03:51,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:03:51,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:03:51,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234203461] [2020-10-14 00:03:51,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:03:51,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:03:51,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:03:51,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:03:51,310 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 6 states. [2020-10-14 00:03:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:03:51,423 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2020-10-14 00:03:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:03:51,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-14 00:03:51,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:03:51,426 INFO L225 Difference]: With dead ends: 57 [2020-10-14 00:03:51,426 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 00:03:51,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:03:51,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 00:03:51,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2020-10-14 00:03:51,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 00:03:51,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-14 00:03:51,440 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 26 [2020-10-14 00:03:51,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:03:51,440 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-14 00:03:51,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:03:51,440 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-10-14 00:03:51,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 00:03:51,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:03:51,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:03:51,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:03:51,442 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:03:51,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:03:51,443 INFO L82 PathProgramCache]: Analyzing trace with hash 134210059, now seen corresponding path program 1 times [2020-10-14 00:03:51,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:03:51,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169591402] [2020-10-14 00:03:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:03:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:51,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:51,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:52,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:52,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 00:03:52,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:03:52,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-10-14 00:03:52,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:52,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:52,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:03:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 00:03:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:03:52,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:52,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:03:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:52,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:52,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:52,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:03:52,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:52,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:03:52,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:52,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:52,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:52,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:52,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:03:52,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169591402] [2020-10-14 00:03:52,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:03:52,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:03:52,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913467992] [2020-10-14 00:03:52,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:03:52,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:03:52,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:03:52,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:03:52,432 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 6 states. [2020-10-14 00:03:52,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:03:52,551 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2020-10-14 00:03:52,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:03:52,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-14 00:03:52,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:03:52,552 INFO L225 Difference]: With dead ends: 90 [2020-10-14 00:03:52,552 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 00:03:52,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:03:52,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 00:03:52,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 47. [2020-10-14 00:03:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 00:03:52,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2020-10-14 00:03:52,562 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 26 [2020-10-14 00:03:52,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:03:52,563 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2020-10-14 00:03:52,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:03:52,563 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2020-10-14 00:03:52,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 00:03:52,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:03:52,564 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:03:52,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:03:52,565 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:03:52,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:03:52,565 INFO L82 PathProgramCache]: Analyzing trace with hash 2086701306, now seen corresponding path program 2 times [2020-10-14 00:03:52,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:03:52,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999889210] [2020-10-14 00:03:52,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:03:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:52,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:52,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:52,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:53,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:56,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:56,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:03:56,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:03:56,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4142 [2020-10-14 00:03:56,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:56,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:56,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:03:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:03:56,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 00:03:56,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 00:03:56,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:03:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:56,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:56,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:56,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:03:56,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:56,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:03:56,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:56,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:56,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:56,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:56,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 00:03:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 00:03:56,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999889210] [2020-10-14 00:03:56,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:03:56,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:03:56,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758102912] [2020-10-14 00:03:56,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:03:56,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:03:56,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:03:56,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:03:56,804 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 7 states. [2020-10-14 00:03:56,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:03:56,946 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2020-10-14 00:03:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:03:56,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-14 00:03:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:03:56,948 INFO L225 Difference]: With dead ends: 77 [2020-10-14 00:03:56,948 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 00:03:56,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:03:56,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 00:03:56,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 47. [2020-10-14 00:03:56,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 00:03:56,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2020-10-14 00:03:56,965 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 31 [2020-10-14 00:03:56,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:03:56,965 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2020-10-14 00:03:56,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:03:56,965 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2020-10-14 00:03:56,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 00:03:56,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:03:56,967 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:03:56,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:03:56,969 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:03:56,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:03:56,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1621459976, now seen corresponding path program 2 times [2020-10-14 00:03:56,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:03:56,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941774656] [2020-10-14 00:03:56,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:03:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:56,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:57,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:57,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:59,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:59,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:03:59,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:03:59,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2182 [2020-10-14 00:03:59,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:59,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:59,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:03:59,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:03:59,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:03:59,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:59,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:03:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:59,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:59,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:59,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:03:59,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:59,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:03:59,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:59,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:59,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 00:03:59,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941774656] [2020-10-14 00:03:59,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:03:59,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:03:59,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183471277] [2020-10-14 00:03:59,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:03:59,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:03:59,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:03:59,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:03:59,228 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 7 states. [2020-10-14 00:03:59,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:03:59,338 INFO L93 Difference]: Finished difference Result 124 states and 154 transitions. [2020-10-14 00:03:59,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:03:59,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-14 00:03:59,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:03:59,340 INFO L225 Difference]: With dead ends: 124 [2020-10-14 00:03:59,340 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 00:03:59,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:03:59,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 00:03:59,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 55. [2020-10-14 00:03:59,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 00:03:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2020-10-14 00:03:59,350 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 31 [2020-10-14 00:03:59,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:03:59,350 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2020-10-14 00:03:59,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:03:59,350 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2020-10-14 00:03:59,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 00:03:59,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:03:59,352 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:03:59,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:03:59,352 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:03:59,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:03:59,353 INFO L82 PathProgramCache]: Analyzing trace with hash -776970451, now seen corresponding path program 3 times [2020-10-14 00:03:59,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:03:59,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351388266] [2020-10-14 00:03:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:03:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:59,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:59,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:59,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:59,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:00,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:04,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:04,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 00:04:04,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:04:04,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:04:04,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:04,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:04:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:04:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:04:04,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:04,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:04,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:04,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:04,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:04,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:04,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:04,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:04,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:04,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:04,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 00:04:04,447 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-14 00:04:04,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351388266] [2020-10-14 00:04:04,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:04,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:04:04,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401855035] [2020-10-14 00:04:04,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:04:04,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:04,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:04:04,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:04:04,455 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand 6 states. [2020-10-14 00:04:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:04,554 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2020-10-14 00:04:04,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:04:04,555 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-14 00:04:04,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:04,555 INFO L225 Difference]: With dead ends: 78 [2020-10-14 00:04:04,556 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 00:04:04,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:04:04,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 00:04:04,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-14 00:04:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 00:04:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-10-14 00:04:04,565 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 36 [2020-10-14 00:04:04,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:04,566 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-10-14 00:04:04,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:04:04,566 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-10-14 00:04:04,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 00:04:04,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:04,567 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:04,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:04:04,568 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:04,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:04,568 INFO L82 PathProgramCache]: Analyzing trace with hash 244097903, now seen corresponding path program 3 times [2020-10-14 00:04:04,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:04,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060493541] [2020-10-14 00:04:04,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:04,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:04,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:05,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:08,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:08,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 00:04:08,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:04:08,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3714 [2020-10-14 00:04:08,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:08,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:08,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:04:08,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:04:08,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:04:08,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:08,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:08,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:08,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:08,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:08,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:08,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:08,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:08,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:08,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:08,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:08,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:08,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 00:04:08,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060493541] [2020-10-14 00:04:08,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:08,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:04:08,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771558655] [2020-10-14 00:04:08,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:04:08,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:08,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:04:08,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:04:08,368 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 8 states. [2020-10-14 00:04:08,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:08,504 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2020-10-14 00:04:08,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:04:08,504 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-14 00:04:08,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:08,505 INFO L225 Difference]: With dead ends: 93 [2020-10-14 00:04:08,505 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 00:04:08,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:04:08,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 00:04:08,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2020-10-14 00:04:08,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 00:04:08,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-14 00:04:08,518 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 36 [2020-10-14 00:04:08,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:08,519 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-14 00:04:08,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:04:08,519 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-14 00:04:08,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 00:04:08,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:08,522 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:08,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:04:08,522 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:08,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:08,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1606320558, now seen corresponding path program 4 times [2020-10-14 00:04:08,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:08,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866576447] [2020-10-14 00:04:08,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:08,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:08,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:08,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:08,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:10,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:13,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 00:04:13,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:04:13,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:04:13,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:13,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:04:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:04:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 00:04:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:13,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:13,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:13,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:13,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:13,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:13,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:13,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:13,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:13,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:13,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:13,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:13,607 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-14 00:04:13,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866576447] [2020-10-14 00:04:13,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:13,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:04:13,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393592398] [2020-10-14 00:04:13,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:04:13,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:13,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:04:13,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:04:13,609 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 8 states. [2020-10-14 00:04:13,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:13,753 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-14 00:04:13,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:04:13,754 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-14 00:04:13,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:13,755 INFO L225 Difference]: With dead ends: 68 [2020-10-14 00:04:13,755 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 00:04:13,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:04:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 00:04:13,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2020-10-14 00:04:13,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 00:04:13,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-14 00:04:13,762 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 41 [2020-10-14 00:04:13,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:13,762 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-14 00:04:13,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:04:13,763 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-14 00:04:13,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 00:04:13,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:13,764 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:13,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:04:13,764 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:13,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:13,765 INFO L82 PathProgramCache]: Analyzing trace with hash -585252204, now seen corresponding path program 4 times [2020-10-14 00:04:13,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:13,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815591890] [2020-10-14 00:04:13,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:17,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:17,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 00:04:17,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:04:17,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3681 [2020-10-14 00:04:17,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:17,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:17,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:04:17,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 00:04:17,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:04:17,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:17,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:17,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:17,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:17,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:17,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:17,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:17,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:17,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:17,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:17,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:17,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:17,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-14 00:04:17,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815591890] [2020-10-14 00:04:17,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:17,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:04:17,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136937317] [2020-10-14 00:04:17,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:04:17,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:17,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:04:17,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:04:17,523 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 9 states. [2020-10-14 00:04:17,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:17,636 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2020-10-14 00:04:17,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:04:17,637 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-10-14 00:04:17,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:17,638 INFO L225 Difference]: With dead ends: 114 [2020-10-14 00:04:17,638 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 00:04:17,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:04:17,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 00:04:17,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 54. [2020-10-14 00:04:17,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 00:04:17,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2020-10-14 00:04:17,659 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 41 [2020-10-14 00:04:17,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:17,660 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2020-10-14 00:04:17,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:04:17,660 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2020-10-14 00:04:17,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 00:04:17,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:17,661 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:17,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:04:17,661 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:17,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:17,662 INFO L82 PathProgramCache]: Analyzing trace with hash 904702037, now seen corresponding path program 5 times [2020-10-14 00:04:17,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:17,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060669100] [2020-10-14 00:04:17,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:17,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:17,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:17,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:17,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:19,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:22,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:22,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 00:04:22,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:04:22,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:04:22,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:22,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:22,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:04:22,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:04:22,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 00:04:22,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:22,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:22,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:22,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:22,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:22,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:22,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:22,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:22,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:22,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:22,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-14 00:04:22,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060669100] [2020-10-14 00:04:22,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:22,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:04:22,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322357937] [2020-10-14 00:04:22,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:04:22,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:22,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:04:22,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:04:22,759 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 9 states. [2020-10-14 00:04:22,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:22,899 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2020-10-14 00:04:22,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:04:22,900 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-14 00:04:22,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:22,901 INFO L225 Difference]: With dead ends: 76 [2020-10-14 00:04:22,901 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 00:04:22,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:04:22,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 00:04:22,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2020-10-14 00:04:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 00:04:22,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2020-10-14 00:04:22,918 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 46 [2020-10-14 00:04:22,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:22,918 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2020-10-14 00:04:22,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:04:22,919 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2020-10-14 00:04:22,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 00:04:22,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:22,920 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:22,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:04:22,923 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:22,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:22,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1701321517, now seen corresponding path program 5 times [2020-10-14 00:04:22,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:22,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743674109] [2020-10-14 00:04:22,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:22,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:22,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:23,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:27,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:27,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 00:04:27,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:04:27,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 00:04:27,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:27,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:04:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 00:04:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 00:04:27,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:28,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:28,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:28,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:28,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:28,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:28,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:28,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:28,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:28,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 00:04:28,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743674109] [2020-10-14 00:04:28,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:28,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:04:28,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79957786] [2020-10-14 00:04:28,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:04:28,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:28,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:04:28,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:04:28,028 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 10 states. [2020-10-14 00:04:28,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:28,167 INFO L93 Difference]: Finished difference Result 138 states and 162 transitions. [2020-10-14 00:04:28,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:04:28,167 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-10-14 00:04:28,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:28,168 INFO L225 Difference]: With dead ends: 138 [2020-10-14 00:04:28,168 INFO L226 Difference]: Without dead ends: 103 [2020-10-14 00:04:28,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:04:28,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-14 00:04:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 59. [2020-10-14 00:04:28,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 00:04:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2020-10-14 00:04:28,176 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 46 [2020-10-14 00:04:28,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:28,176 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2020-10-14 00:04:28,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:04:28,176 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2020-10-14 00:04:28,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 00:04:28,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:28,177 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:28,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:04:28,178 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:28,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:28,178 INFO L82 PathProgramCache]: Analyzing trace with hash -106897810, now seen corresponding path program 6 times [2020-10-14 00:04:28,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:28,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035648993] [2020-10-14 00:04:28,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:28,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:28,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:28,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:28,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:31,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:33,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:33,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 00:04:33,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:04:33,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 00:04:33,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:33,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:33,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:04:33,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:04:33,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:04:33,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:33,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:33,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:33,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:33,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:33,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:33,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:33,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:33,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:33,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:33,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:33,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:33,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 00:04:33,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035648993] [2020-10-14 00:04:33,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:33,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:04:33,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247319626] [2020-10-14 00:04:33,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:04:33,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:33,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:04:33,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:04:33,251 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 7 states. [2020-10-14 00:04:33,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:33,367 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2020-10-14 00:04:33,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:04:33,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-14 00:04:33,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:33,368 INFO L225 Difference]: With dead ends: 85 [2020-10-14 00:04:33,368 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 00:04:33,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:04:33,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 00:04:33,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-14 00:04:33,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 00:04:33,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-10-14 00:04:33,375 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 51 [2020-10-14 00:04:33,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:33,375 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-10-14 00:04:33,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:04:33,376 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-10-14 00:04:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 00:04:33,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:33,377 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:33,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:04:33,377 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:33,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:33,377 INFO L82 PathProgramCache]: Analyzing trace with hash -325752528, now seen corresponding path program 6 times [2020-10-14 00:04:33,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:33,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61612363] [2020-10-14 00:04:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:33,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:33,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:34,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:38,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:38,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 00:04:38,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:04:38,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 00:04:38,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:38,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:04:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 00:04:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 00:04:38,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:38,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:38,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:38,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:38,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:38,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:38,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:38,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:38,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:38,473 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 00:04:38,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61612363] [2020-10-14 00:04:38,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:38,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 00:04:38,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856434735] [2020-10-14 00:04:38,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 00:04:38,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:38,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 00:04:38,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:04:38,475 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 11 states. [2020-10-14 00:04:38,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:38,637 INFO L93 Difference]: Finished difference Result 146 states and 170 transitions. [2020-10-14 00:04:38,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:04:38,637 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-10-14 00:04:38,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:38,638 INFO L225 Difference]: With dead ends: 146 [2020-10-14 00:04:38,639 INFO L226 Difference]: Without dead ends: 108 [2020-10-14 00:04:38,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:04:38,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-14 00:04:38,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 64. [2020-10-14 00:04:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 00:04:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-10-14 00:04:38,646 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 51 [2020-10-14 00:04:38,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:38,646 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-10-14 00:04:38,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 00:04:38,646 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-10-14 00:04:38,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 00:04:38,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:38,647 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:38,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:04:38,648 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:38,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:38,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1378311029, now seen corresponding path program 7 times [2020-10-14 00:04:38,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:38,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183513352] [2020-10-14 00:04:38,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:38,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:38,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:38,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:38,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:43,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:43,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:04:43,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:04:43,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 00:04:43,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:43,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:04:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:04:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 00:04:43,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:43,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:43,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:43,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:43,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:43,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:43,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:43,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:43,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:43,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:43,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:43,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:43,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:43,746 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 00:04:43,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183513352] [2020-10-14 00:04:43,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:43,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:04:43,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019963076] [2020-10-14 00:04:43,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:04:43,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:43,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:04:43,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:04:43,748 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 10 states. [2020-10-14 00:04:43,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:43,977 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2020-10-14 00:04:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:04:43,977 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-14 00:04:43,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:43,978 INFO L225 Difference]: With dead ends: 89 [2020-10-14 00:04:43,978 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 00:04:43,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:04:43,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 00:04:43,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2020-10-14 00:04:43,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 00:04:43,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-10-14 00:04:43,988 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 56 [2020-10-14 00:04:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:43,988 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-10-14 00:04:43,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:04:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-10-14 00:04:43,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 00:04:43,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:43,991 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:43,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:04:43,992 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:43,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:43,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1159456311, now seen corresponding path program 7 times [2020-10-14 00:04:43,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:43,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918240286] [2020-10-14 00:04:43,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:44,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:44,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:45,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:49,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:49,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:04:49,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:04:49,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 00:04:49,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:49,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:49,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:04:49,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 00:04:49,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 00:04:49,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:49,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:49,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:49,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:49,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:49,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:49,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:49,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:49,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:49,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:49,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:49,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:49,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:49,160 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-14 00:04:49,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918240286] [2020-10-14 00:04:49,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:49,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 00:04:49,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435013892] [2020-10-14 00:04:49,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 00:04:49,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:49,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 00:04:49,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:04:49,165 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 12 states. [2020-10-14 00:04:49,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:49,333 INFO L93 Difference]: Finished difference Result 173 states and 204 transitions. [2020-10-14 00:04:49,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:04:49,333 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2020-10-14 00:04:49,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:49,334 INFO L225 Difference]: With dead ends: 173 [2020-10-14 00:04:49,334 INFO L226 Difference]: Without dead ends: 132 [2020-10-14 00:04:49,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:04:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-14 00:04:49,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 69. [2020-10-14 00:04:49,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 00:04:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-14 00:04:49,345 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 56 [2020-10-14 00:04:49,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:49,346 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-14 00:04:49,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 00:04:49,346 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-14 00:04:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 00:04:49,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:49,347 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:49,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:04:49,347 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:49,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:49,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1374144974, now seen corresponding path program 8 times [2020-10-14 00:04:49,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:49,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063717388] [2020-10-14 00:04:49,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:49,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:49,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:49,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:49,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:54,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 00:04:54,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:04:54,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:04:54,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:54,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:04:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:04:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 00:04:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:54,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:54,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:54,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:54,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:54,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:54,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:54,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:54,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:54,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:04:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 62 proven. 15 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-14 00:04:54,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063717388] [2020-10-14 00:04:54,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:54,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:04:54,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146294573] [2020-10-14 00:04:54,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:04:54,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:54,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:04:54,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:04:54,494 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 8 states. [2020-10-14 00:04:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:54,673 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2020-10-14 00:04:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:04:54,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-14 00:04:54,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:54,675 INFO L225 Difference]: With dead ends: 98 [2020-10-14 00:04:54,675 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 00:04:54,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:04:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 00:04:54,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-14 00:04:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 00:04:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-10-14 00:04:54,687 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 61 [2020-10-14 00:04:54,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:54,687 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-10-14 00:04:54,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:04:54,687 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-10-14 00:04:54,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 00:04:54,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:54,696 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:54,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:04:54,697 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:54,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:54,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1233596364, now seen corresponding path program 8 times [2020-10-14 00:04:54,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:54,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025654510] [2020-10-14 00:04:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:54,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:58,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:59,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 00:04:59,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:04:59,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 00:04:59,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:59,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:04:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:04:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 00:04:59,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:59,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:59,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:59,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:59,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:59,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:04:59,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:59,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:59,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:59,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:59,839 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 00:04:59,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025654510] [2020-10-14 00:04:59,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:59,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:04:59,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022985868] [2020-10-14 00:04:59,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:04:59,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:59,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:04:59,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:04:59,844 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand 13 states. [2020-10-14 00:05:00,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:00,039 INFO L93 Difference]: Finished difference Result 181 states and 212 transitions. [2020-10-14 00:05:00,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 00:05:00,039 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2020-10-14 00:05:00,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:00,041 INFO L225 Difference]: With dead ends: 181 [2020-10-14 00:05:00,041 INFO L226 Difference]: Without dead ends: 137 [2020-10-14 00:05:00,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:05:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-14 00:05:00,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 74. [2020-10-14 00:05:00,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 00:05:00,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-10-14 00:05:00,051 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 61 [2020-10-14 00:05:00,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:00,051 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-10-14 00:05:00,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:05:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-10-14 00:05:00,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 00:05:00,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:00,053 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:00,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:05:00,053 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:00,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:00,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1056145821, now seen corresponding path program 9 times [2020-10-14 00:05:00,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:00,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200619757] [2020-10-14 00:05:00,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:00,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:00,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:00,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:00,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:05,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:05,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 00:05:05,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:05:05,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 00:05:05,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:05,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:05:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:05:05,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 00:05:05,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:05,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:05,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:05,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:05,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:05,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:05,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:05,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:05,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-14 00:05:05,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200619757] [2020-10-14 00:05:05,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:05,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 00:05:05,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30385743] [2020-10-14 00:05:05,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 00:05:05,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:05,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 00:05:05,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:05:05,174 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 11 states. [2020-10-14 00:05:05,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:05,386 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2020-10-14 00:05:05,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:05:05,387 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-10-14 00:05:05,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:05,388 INFO L225 Difference]: With dead ends: 102 [2020-10-14 00:05:05,388 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 00:05:05,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:05:05,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 00:05:05,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 74. [2020-10-14 00:05:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 00:05:05,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-10-14 00:05:05,397 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 66 [2020-10-14 00:05:05,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:05,399 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-10-14 00:05:05,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 00:05:05,399 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-10-14 00:05:05,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 00:05:05,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:05,400 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:05,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 00:05:05,400 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:05,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:05,401 INFO L82 PathProgramCache]: Analyzing trace with hash 915597211, now seen corresponding path program 9 times [2020-10-14 00:05:05,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:05,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896213115] [2020-10-14 00:05:05,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:05,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:05,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:08,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:10,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 00:05:10,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:05:10,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 00:05:10,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:10,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:10,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:05:10,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 00:05:10,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 00:05:10,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:10,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:10,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:10,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:10,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:10,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:10,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:10,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:10,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:10,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:10,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:10,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:10,539 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 00:05:10,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896213115] [2020-10-14 00:05:10,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:10,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:05:10,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613470087] [2020-10-14 00:05:10,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:05:10,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:10,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:05:10,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:05:10,542 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 14 states. [2020-10-14 00:05:10,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:10,736 INFO L93 Difference]: Finished difference Result 211 states and 250 transitions. [2020-10-14 00:05:10,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:05:10,736 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-14 00:05:10,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:10,737 INFO L225 Difference]: With dead ends: 211 [2020-10-14 00:05:10,737 INFO L226 Difference]: Without dead ends: 164 [2020-10-14 00:05:10,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:05:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-14 00:05:10,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 79. [2020-10-14 00:05:10,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 00:05:10,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-10-14 00:05:10,750 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 66 [2020-10-14 00:05:10,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:10,750 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-10-14 00:05:10,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:05:10,750 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-10-14 00:05:10,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 00:05:10,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:10,751 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:10,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 00:05:10,752 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:10,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:10,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1339745574, now seen corresponding path program 10 times [2020-10-14 00:05:10,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:10,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757020400] [2020-10-14 00:05:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:10,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:11,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:15,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 00:05:15,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:05:15,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 00:05:15,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:15,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:05:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:05:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:05:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:15,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:15,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:15,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:15,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:15,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:15,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:15,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:15,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:15,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:15,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:15,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 93 proven. 26 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-10-14 00:05:15,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757020400] [2020-10-14 00:05:15,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:15,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:05:15,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690980634] [2020-10-14 00:05:15,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:05:15,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:15,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:05:15,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:05:15,870 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 9 states. [2020-10-14 00:05:16,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:16,012 INFO L93 Difference]: Finished difference Result 111 states and 128 transitions. [2020-10-14 00:05:16,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:05:16,014 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-14 00:05:16,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:16,015 INFO L225 Difference]: With dead ends: 111 [2020-10-14 00:05:16,015 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 00:05:16,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:05:16,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 00:05:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-14 00:05:16,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 00:05:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2020-10-14 00:05:16,023 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 71 [2020-10-14 00:05:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:16,023 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2020-10-14 00:05:16,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:05:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2020-10-14 00:05:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 00:05:16,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:16,024 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:16,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 00:05:16,025 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:16,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:16,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1849218664, now seen corresponding path program 10 times [2020-10-14 00:05:16,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:16,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305112757] [2020-10-14 00:05:16,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:16,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:16,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:20,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:21,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:21,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 00:05:21,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:05:21,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 00:05:21,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:21,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 00:05:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:05:21,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 00:05:21,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:22,319 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 25 [2020-10-14 00:05:22,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:22,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:22,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:22,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:22,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:22,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:22,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:22,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:22,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-14 00:05:22,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305112757] [2020-10-14 00:05:22,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:22,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:05:22,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814676958] [2020-10-14 00:05:22,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:05:22,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:22,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:05:22,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:05:22,396 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 10 states. [2020-10-14 00:05:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:22,654 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2020-10-14 00:05:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:05:22,655 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-10-14 00:05:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:22,656 INFO L225 Difference]: With dead ends: 90 [2020-10-14 00:05:22,657 INFO L226 Difference]: Without dead ends: 88 [2020-10-14 00:05:22,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:05:22,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-14 00:05:22,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-10-14 00:05:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 00:05:22,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2020-10-14 00:05:22,669 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 71 [2020-10-14 00:05:22,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:22,669 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2020-10-14 00:05:22,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:05:22,670 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2020-10-14 00:05:22,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 00:05:22,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:22,671 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:22,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 00:05:22,671 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:22,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:22,671 INFO L82 PathProgramCache]: Analyzing trace with hash -696652140, now seen corresponding path program 1 times [2020-10-14 00:05:22,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:22,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304675828] [2020-10-14 00:05:22,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:22,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:22,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:22,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:23,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:27,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 00:05:27,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:05:27,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 00:05:27,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:27,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:05:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:05:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 00:05:27,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:27,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:27,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:27,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:27,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:27,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:27,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:27,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:27,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:27,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:27,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:27,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2020-10-14 00:05:27,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304675828] [2020-10-14 00:05:27,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:05:27,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 00:05:27,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24146472] [2020-10-14 00:05:27,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:05:27,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:27,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:05:27,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:05:27,778 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 5 states. [2020-10-14 00:05:27,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:27,840 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2020-10-14 00:05:27,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:05:27,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-14 00:05:27,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:27,842 INFO L225 Difference]: With dead ends: 99 [2020-10-14 00:05:27,842 INFO L226 Difference]: Without dead ends: 88 [2020-10-14 00:05:27,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:05:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-14 00:05:27,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-10-14 00:05:27,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 00:05:27,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2020-10-14 00:05:27,854 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 74 [2020-10-14 00:05:27,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:27,854 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2020-10-14 00:05:27,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:05:27,854 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2020-10-14 00:05:27,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 00:05:27,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:27,855 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:27,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 00:05:27,856 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:27,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:27,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1515292191, now seen corresponding path program 1 times [2020-10-14 00:05:27,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:27,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681034710] [2020-10-14 00:05:27,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:27,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:32,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:32,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 00:05:32,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:05:32,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:05:32,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:32,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:32,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:05:32,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 00:05:32,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:05:32,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:32,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:32,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:32,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:32,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:32,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:32,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:32,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:32,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:32,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:32,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 00:05:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:32,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:32,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:32,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:32,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:32,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:33,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:33,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-14 00:05:33,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681034710] [2020-10-14 00:05:33,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:33,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:05:33,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772217852] [2020-10-14 00:05:33,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:05:33,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:33,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:05:33,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:05:33,010 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 15 states. [2020-10-14 00:05:33,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:33,208 INFO L93 Difference]: Finished difference Result 233 states and 272 transitions. [2020-10-14 00:05:33,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:05:33,208 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 80 [2020-10-14 00:05:33,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:33,212 INFO L225 Difference]: With dead ends: 233 [2020-10-14 00:05:33,212 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 00:05:33,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:05:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 00:05:33,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 91. [2020-10-14 00:05:33,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 00:05:33,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2020-10-14 00:05:33,225 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 80 [2020-10-14 00:05:33,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:33,225 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2020-10-14 00:05:33,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:05:33,226 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2020-10-14 00:05:33,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 00:05:33,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:33,227 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:33,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 00:05:33,227 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:33,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:33,227 INFO L82 PathProgramCache]: Analyzing trace with hash -131017622, now seen corresponding path program 1 times [2020-10-14 00:05:33,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:33,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161590310] [2020-10-14 00:05:33,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:33,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:38,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:38,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 00:05:38,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:05:38,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:05:38,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:38,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:38,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:05:38,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:05:38,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 00:05:38,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:38,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:38,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:38,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:38,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:38,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:38,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:38,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:38,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:38,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:38,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:38,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:05:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:38,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:38,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:38,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:38,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:38,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:38,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:38,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:38,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:38,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:38,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:38,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 2 proven. 170 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-14 00:05:38,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161590310] [2020-10-14 00:05:38,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:38,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 00:05:38,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682772941] [2020-10-14 00:05:38,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 00:05:38,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:38,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 00:05:38,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:05:38,350 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand 12 states. [2020-10-14 00:05:38,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:38,619 INFO L93 Difference]: Finished difference Result 129 states and 147 transitions. [2020-10-14 00:05:38,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:05:38,619 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2020-10-14 00:05:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:38,621 INFO L225 Difference]: With dead ends: 129 [2020-10-14 00:05:38,621 INFO L226 Difference]: Without dead ends: 110 [2020-10-14 00:05:38,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-10-14 00:05:38,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-14 00:05:38,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 91. [2020-10-14 00:05:38,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 00:05:38,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2020-10-14 00:05:38,635 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 85 [2020-10-14 00:05:38,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:38,636 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2020-10-14 00:05:38,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 00:05:38,636 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2020-10-14 00:05:38,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 00:05:38,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:38,637 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:38,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 00:05:38,637 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:38,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:38,638 INFO L82 PathProgramCache]: Analyzing trace with hash -790549144, now seen corresponding path program 2 times [2020-10-14 00:05:38,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:38,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278412001] [2020-10-14 00:05:38,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:38,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:38,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:43,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:43,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 00:05:43,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:05:43,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:05:43,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:43,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:43,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:05:43,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 00:05:43,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 00:05:43,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:43,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:43,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:43,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:43,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:43,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:43,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:43,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:43,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:43,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:43,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:05:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:43,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:43,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:43,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:43,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:43,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:43,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:43,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:43,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:43,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:43,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:43,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:43,804 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 2 proven. 210 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-14 00:05:43,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278412001] [2020-10-14 00:05:43,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:43,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 00:05:43,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828850444] [2020-10-14 00:05:43,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 00:05:43,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:43,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 00:05:43,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:05:43,807 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand 16 states. [2020-10-14 00:05:44,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:44,054 INFO L93 Difference]: Finished difference Result 266 states and 314 transitions. [2020-10-14 00:05:44,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 00:05:44,054 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 85 [2020-10-14 00:05:44,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:44,056 INFO L225 Difference]: With dead ends: 266 [2020-10-14 00:05:44,057 INFO L226 Difference]: Without dead ends: 206 [2020-10-14 00:05:44,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:05:44,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-14 00:05:44,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 96. [2020-10-14 00:05:44,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 00:05:44,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2020-10-14 00:05:44,072 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 85 [2020-10-14 00:05:44,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:44,072 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2020-10-14 00:05:44,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 00:05:44,072 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2020-10-14 00:05:44,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 00:05:44,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:44,073 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:44,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 00:05:44,074 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:44,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:44,074 INFO L82 PathProgramCache]: Analyzing trace with hash -421146431, now seen corresponding path program 2 times [2020-10-14 00:05:44,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:44,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360648037] [2020-10-14 00:05:44,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:44,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:49,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 00:05:49,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:05:49,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:05:49,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:49,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:05:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:05:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 00:05:49,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:49,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:49,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:49,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:49,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:49,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:49,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:49,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:49,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:49,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:49,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:49,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:49,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 00:05:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:49,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:49,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:49,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:49,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:49,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:49,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:49,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:49,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:49,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:49,202 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 2 proven. 207 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-10-14 00:05:49,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360648037] [2020-10-14 00:05:49,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:49,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:05:49,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294526679] [2020-10-14 00:05:49,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:05:49,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:49,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:05:49,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:05:49,204 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 13 states. [2020-10-14 00:05:49,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:49,511 INFO L93 Difference]: Finished difference Result 137 states and 157 transitions. [2020-10-14 00:05:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 00:05:49,513 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 90 [2020-10-14 00:05:49,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:49,515 INFO L225 Difference]: With dead ends: 137 [2020-10-14 00:05:49,515 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 00:05:49,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:05:49,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 00:05:49,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 96. [2020-10-14 00:05:49,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 00:05:49,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2020-10-14 00:05:49,531 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 90 [2020-10-14 00:05:49,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:49,532 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2020-10-14 00:05:49,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:05:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2020-10-14 00:05:49,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 00:05:49,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:49,533 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:49,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 00:05:49,533 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:49,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:49,533 INFO L82 PathProgramCache]: Analyzing trace with hash 950660867, now seen corresponding path program 3 times [2020-10-14 00:05:49,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:49,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628801906] [2020-10-14 00:05:49,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:49,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:54,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:54,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 00:05:54,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:05:54,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 00:05:54,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:54,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:54,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 00:05:54,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 00:05:54,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 00:05:54,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:54,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:54,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:54,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:54,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:54,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:54,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:54,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:54,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:54,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:54,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 00:05:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:54,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:54,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:54,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:54,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:54,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:54,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:54,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:54,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 2 proven. 247 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-10-14 00:05:54,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628801906] [2020-10-14 00:05:54,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:54,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 00:05:54,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449251758] [2020-10-14 00:05:54,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 00:05:54,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:54,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 00:05:54,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:05:54,769 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 17 states. [2020-10-14 00:05:55,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:55,028 INFO L93 Difference]: Finished difference Result 302 states and 360 transitions. [2020-10-14 00:05:55,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 00:05:55,029 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 90 [2020-10-14 00:05:55,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:55,031 INFO L225 Difference]: With dead ends: 302 [2020-10-14 00:05:55,031 INFO L226 Difference]: Without dead ends: 239 [2020-10-14 00:05:55,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:05:55,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-14 00:05:55,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 101. [2020-10-14 00:05:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 00:05:55,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-10-14 00:05:55,047 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 90 [2020-10-14 00:05:55,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:55,047 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-10-14 00:05:55,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 00:05:55,047 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-10-14 00:05:55,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 00:05:55,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:55,049 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:55,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 00:05:55,049 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:55,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:55,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1343120890, now seen corresponding path program 3 times [2020-10-14 00:05:55,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:55,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026738516] [2020-10-14 00:05:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:55,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:55,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:55,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:56,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:00,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:00,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 00:06:00,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:06:00,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 00:06:00,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:00,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:06:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:06:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 00:06:00,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:00,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:00,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:00,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:00,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:00,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:00,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:00,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:00,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:00,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:00,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:06:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:00,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:00,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:00,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:00,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:00,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:06:00,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:00,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:00,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 149 proven. 40 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2020-10-14 00:06:00,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026738516] [2020-10-14 00:06:00,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:00,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:06:00,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120466208] [2020-10-14 00:06:00,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:06:00,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:00,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:06:00,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:06:00,167 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 10 states. [2020-10-14 00:06:00,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:00,380 INFO L93 Difference]: Finished difference Result 146 states and 167 transitions. [2020-10-14 00:06:00,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:06:00,381 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 95 [2020-10-14 00:06:00,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:00,382 INFO L225 Difference]: With dead ends: 146 [2020-10-14 00:06:00,382 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 00:06:00,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:06:00,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 00:06:00,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-10-14 00:06:00,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 00:06:00,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2020-10-14 00:06:00,402 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 95 [2020-10-14 00:06:00,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:00,402 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2020-10-14 00:06:00,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:06:00,403 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2020-10-14 00:06:00,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 00:06:00,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:00,404 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:00,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 00:06:00,404 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:00,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:00,404 INFO L82 PathProgramCache]: Analyzing trace with hash -445727612, now seen corresponding path program 4 times [2020-10-14 00:06:00,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:00,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282433514] [2020-10-14 00:06:00,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:00,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:00,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:05,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:05,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 00:06:05,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:06:05,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 00:06:05,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:05,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 00:06:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 00:06:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 00:06:05,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:05,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:05,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:05,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:05,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:05,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:05,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:05,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:05,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:05,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:05,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:05,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:05,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:05,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:06:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:05,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:05,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:05,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:05,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:05,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:05,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:05,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:05,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 2 proven. 287 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-14 00:06:05,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282433514] [2020-10-14 00:06:05,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:05,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:06:05,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980381304] [2020-10-14 00:06:05,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:06:05,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:05,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:06:05,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:06:05,655 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand 18 states. [2020-10-14 00:06:05,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:05,920 INFO L93 Difference]: Finished difference Result 310 states and 368 transitions. [2020-10-14 00:06:05,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 00:06:05,920 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 95 [2020-10-14 00:06:05,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:05,923 INFO L225 Difference]: With dead ends: 310 [2020-10-14 00:06:05,923 INFO L226 Difference]: Without dead ends: 244 [2020-10-14 00:06:05,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:06:05,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-14 00:06:05,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 106. [2020-10-14 00:06:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-14 00:06:05,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2020-10-14 00:06:05,941 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 95 [2020-10-14 00:06:05,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:05,942 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2020-10-14 00:06:05,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:06:05,942 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2020-10-14 00:06:05,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 00:06:05,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:05,943 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:05,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 00:06:05,943 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:05,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:05,944 INFO L82 PathProgramCache]: Analyzing trace with hash -662317719, now seen corresponding path program 4 times [2020-10-14 00:06:05,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:05,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266952324] [2020-10-14 00:06:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:05,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:07,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:10,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:10,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 00:06:10,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:06:10,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:06:10,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:10,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:06:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:06:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 00:06:10,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:11,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:11,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:11,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:11,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:11,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:11,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:11,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:11,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:11,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:11,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:11,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:11,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 00:06:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:11,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:11,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:11,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:11,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:11,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:06:11,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:11,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:11,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:11,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:11,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:11,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 2 proven. 273 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2020-10-14 00:06:11,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266952324] [2020-10-14 00:06:11,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:11,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:06:11,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603614283] [2020-10-14 00:06:11,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:06:11,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:11,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:06:11,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:06:11,090 INFO L87 Difference]: Start difference. First operand 106 states and 118 transitions. Second operand 14 states. [2020-10-14 00:06:11,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:11,400 INFO L93 Difference]: Finished difference Result 150 states and 172 transitions. [2020-10-14 00:06:11,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:06:11,400 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-10-14 00:06:11,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:11,401 INFO L225 Difference]: With dead ends: 150 [2020-10-14 00:06:11,402 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 00:06:11,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:06:11,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 00:06:11,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 106. [2020-10-14 00:06:11,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-14 00:06:11,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2020-10-14 00:06:11,417 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 100 [2020-10-14 00:06:11,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:11,417 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2020-10-14 00:06:11,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:06:11,418 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2020-10-14 00:06:11,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 00:06:11,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:11,419 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:11,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 00:06:11,419 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:11,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:11,419 INFO L82 PathProgramCache]: Analyzing trace with hash 235075559, now seen corresponding path program 5 times [2020-10-14 00:06:11,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:11,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64559549] [2020-10-14 00:06:11,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:11,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:11,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 00:06:16,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:06:16,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 00:06:16,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 00:06:16,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 00:06:16,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 00:06:16,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:16,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:16,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:16,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:16,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:16,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:16,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:16,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:16,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:16,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 00:06:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:16,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:16,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:16,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:16,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:16,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:16,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:16,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 2 proven. 330 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2020-10-14 00:06:16,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64559549] [2020-10-14 00:06:16,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:16,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 00:06:16,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680760191] [2020-10-14 00:06:16,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 00:06:16,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:16,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 00:06:16,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:06:16,687 INFO L87 Difference]: Start difference. First operand 106 states and 118 transitions. Second operand 19 states. [2020-10-14 00:06:16,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:16,999 INFO L93 Difference]: Finished difference Result 349 states and 418 transitions. [2020-10-14 00:06:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 00:06:16,999 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 100 [2020-10-14 00:06:16,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:17,001 INFO L225 Difference]: With dead ends: 349 [2020-10-14 00:06:17,002 INFO L226 Difference]: Without dead ends: 280 [2020-10-14 00:06:17,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:06:17,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-14 00:06:17,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 111. [2020-10-14 00:06:17,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 00:06:17,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2020-10-14 00:06:17,018 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 100 [2020-10-14 00:06:17,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:17,019 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2020-10-14 00:06:17,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 00:06:17,019 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2020-10-14 00:06:17,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 00:06:17,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:17,020 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:17,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 00:06:17,020 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:17,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:17,021 INFO L82 PathProgramCache]: Analyzing trace with hash -108943650, now seen corresponding path program 5 times [2020-10-14 00:06:17,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:17,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385877469] [2020-10-14 00:06:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:17,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:17,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:17,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:17,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:22,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:22,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 00:06:22,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:06:22,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-14 00:06:22,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:22,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:22,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:06:22,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:06:22,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 00:06:22,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:22,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:22,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:22,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:22,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:22,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:22,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:22,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:22,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:22,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:22,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:06:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:22,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:22,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:22,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:22,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:22,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:06:22,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:22,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:22,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:22,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:22,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:22,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 195 proven. 57 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2020-10-14 00:06:22,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385877469] [2020-10-14 00:06:22,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:22,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 00:06:22,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615785837] [2020-10-14 00:06:22,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 00:06:22,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:22,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 00:06:22,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:06:22,230 INFO L87 Difference]: Start difference. First operand 111 states and 124 transitions. Second operand 11 states. [2020-10-14 00:06:22,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:22,419 INFO L93 Difference]: Finished difference Result 159 states and 182 transitions. [2020-10-14 00:06:22,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:06:22,420 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2020-10-14 00:06:22,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:22,421 INFO L225 Difference]: With dead ends: 159 [2020-10-14 00:06:22,421 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 00:06:22,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:06:22,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 00:06:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-10-14 00:06:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 00:06:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2020-10-14 00:06:22,440 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 105 [2020-10-14 00:06:22,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:22,441 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2020-10-14 00:06:22,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 00:06:22,441 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2020-10-14 00:06:22,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 00:06:22,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:22,441 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:22,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 00:06:22,442 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:22,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:22,442 INFO L82 PathProgramCache]: Analyzing trace with hash -2037216352, now seen corresponding path program 6 times [2020-10-14 00:06:22,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:22,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133150335] [2020-10-14 00:06:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:22,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:22,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:27,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:27,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 00:06:27,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:06:27,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-14 00:06:27,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:27,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:27,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 00:06:27,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 00:06:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 00:06:27,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:27,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:27,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:27,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:27,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:27,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:27,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:27,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:27,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:06:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:27,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:27,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:27,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:27,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:27,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:06:27,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:27,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:27,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:27,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:27,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:27,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 2 proven. 376 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-10-14 00:06:27,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133150335] [2020-10-14 00:06:27,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:27,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 00:06:27,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071988325] [2020-10-14 00:06:27,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 00:06:27,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:27,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 00:06:27,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 00:06:27,761 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand 20 states. [2020-10-14 00:06:28,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:28,064 INFO L93 Difference]: Finished difference Result 357 states and 426 transitions. [2020-10-14 00:06:28,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 00:06:28,065 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 105 [2020-10-14 00:06:28,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:28,067 INFO L225 Difference]: With dead ends: 357 [2020-10-14 00:06:28,067 INFO L226 Difference]: Without dead ends: 285 [2020-10-14 00:06:28,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 00:06:28,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-14 00:06:28,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 116. [2020-10-14 00:06:28,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-14 00:06:28,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 129 transitions. [2020-10-14 00:06:28,091 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 129 transitions. Word has length 105 [2020-10-14 00:06:28,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:28,092 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 129 transitions. [2020-10-14 00:06:28,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 00:06:28,092 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 129 transitions. [2020-10-14 00:06:28,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 00:06:28,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:28,093 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:28,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 00:06:28,093 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:28,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:28,094 INFO L82 PathProgramCache]: Analyzing trace with hash -235013111, now seen corresponding path program 6 times [2020-10-14 00:06:28,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:28,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7413594] [2020-10-14 00:06:28,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:28,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:28,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:28,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:33,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:33,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:06:33,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:06:33,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 00:06:33,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:33,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:06:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:06:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 00:06:33,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:33,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:33,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:33,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:33,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:33,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:33,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:33,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:33,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:33,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:33,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:33,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:33,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:33,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 00:06:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:33,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:33,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:33,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:33,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:33,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:06:33,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:33,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:33,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:33,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:33,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:33,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 2 proven. 348 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2020-10-14 00:06:33,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7413594] [2020-10-14 00:06:33,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:33,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:06:33,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835768709] [2020-10-14 00:06:33,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:06:33,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:33,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:06:33,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:06:33,294 INFO L87 Difference]: Start difference. First operand 116 states and 129 transitions. Second operand 15 states. [2020-10-14 00:06:33,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:33,653 INFO L93 Difference]: Finished difference Result 163 states and 187 transitions. [2020-10-14 00:06:33,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:06:33,653 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 110 [2020-10-14 00:06:33,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:33,655 INFO L225 Difference]: With dead ends: 163 [2020-10-14 00:06:33,655 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 00:06:33,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:06:33,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 00:06:33,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 116. [2020-10-14 00:06:33,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-14 00:06:33,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 129 transitions. [2020-10-14 00:06:33,678 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 129 transitions. Word has length 110 [2020-10-14 00:06:33,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:33,679 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 129 transitions. [2020-10-14 00:06:33,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:06:33,679 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 129 transitions. [2020-10-14 00:06:33,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 00:06:33,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:33,680 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:33,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 00:06:33,680 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:33,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:33,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2131681483, now seen corresponding path program 7 times [2020-10-14 00:06:33,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:33,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957581917] [2020-10-14 00:06:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:33,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:33,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:38,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:38,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:06:38,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:06:38,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-14 00:06:38,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:38,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:38,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 00:06:38,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 00:06:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 00:06:38,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:38,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:38,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:39,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:39,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:39,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:39,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:39,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:39,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:39,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:39,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:39,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:39,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:39,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 00:06:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:39,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:39,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:39,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:06:39,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:39,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 2 proven. 425 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-14 00:06:39,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957581917] [2020-10-14 00:06:39,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:39,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 00:06:39,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700566945] [2020-10-14 00:06:39,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 00:06:39,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:39,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 00:06:39,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:06:39,018 INFO L87 Difference]: Start difference. First operand 116 states and 129 transitions. Second operand 21 states. [2020-10-14 00:06:39,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:39,389 INFO L93 Difference]: Finished difference Result 399 states and 480 transitions. [2020-10-14 00:06:39,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 00:06:39,389 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 110 [2020-10-14 00:06:39,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:39,392 INFO L225 Difference]: With dead ends: 399 [2020-10-14 00:06:39,392 INFO L226 Difference]: Without dead ends: 324 [2020-10-14 00:06:39,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:06:39,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-14 00:06:39,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 121. [2020-10-14 00:06:39,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 00:06:39,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 135 transitions. [2020-10-14 00:06:39,415 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 135 transitions. Word has length 110 [2020-10-14 00:06:39,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:39,415 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 135 transitions. [2020-10-14 00:06:39,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 00:06:39,415 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 135 transitions. [2020-10-14 00:06:39,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 00:06:39,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:39,416 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:39,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 00:06:39,417 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:39,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:39,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1785564862, now seen corresponding path program 7 times [2020-10-14 00:06:39,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:39,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35098275] [2020-10-14 00:06:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:39,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:39,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:39,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:44,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:44,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 00:06:44,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:06:44,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-14 00:06:44,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:44,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:44,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:06:44,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:06:44,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 00:06:44,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:44,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:44,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:44,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:44,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:44,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:44,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:44,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:44,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:44,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:44,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:44,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:44,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:06:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:44,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:44,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:44,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:44,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:44,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:44,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:44,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:44,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 2 proven. 400 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2020-10-14 00:06:44,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35098275] [2020-10-14 00:06:44,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:44,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 00:06:44,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783201089] [2020-10-14 00:06:44,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 00:06:44,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:44,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 00:06:44,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:06:44,687 INFO L87 Difference]: Start difference. First operand 121 states and 135 transitions. Second operand 16 states. [2020-10-14 00:06:45,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:45,084 INFO L93 Difference]: Finished difference Result 171 states and 197 transitions. [2020-10-14 00:06:45,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 00:06:45,085 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 115 [2020-10-14 00:06:45,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:45,087 INFO L225 Difference]: With dead ends: 171 [2020-10-14 00:06:45,087 INFO L226 Difference]: Without dead ends: 152 [2020-10-14 00:06:45,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-10-14 00:06:45,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-14 00:06:45,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 121. [2020-10-14 00:06:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 00:06:45,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 135 transitions. [2020-10-14 00:06:45,105 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 135 transitions. Word has length 115 [2020-10-14 00:06:45,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:45,105 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 135 transitions. [2020-10-14 00:06:45,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 00:06:45,105 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 135 transitions. [2020-10-14 00:06:45,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 00:06:45,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:45,106 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:45,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 00:06:45,106 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:45,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:45,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1801083580, now seen corresponding path program 8 times [2020-10-14 00:06:45,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:45,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963546797] [2020-10-14 00:06:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:45,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:45,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:50,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:50,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 00:06:50,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:06:50,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 00:06:50,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:50,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 00:06:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 00:06:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 00:06:50,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:50,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:50,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:50,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:50,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:50,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:50,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:50,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:50,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:50,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:50,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 00:06:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:50,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:50,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:50,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:50,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:50,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:06:50,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:50,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:50,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 2 proven. 477 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2020-10-14 00:06:50,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963546797] [2020-10-14 00:06:50,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:50,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 00:06:50,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172467968] [2020-10-14 00:06:50,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 00:06:50,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:50,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 00:06:50,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:06:50,400 INFO L87 Difference]: Start difference. First operand 121 states and 135 transitions. Second operand 22 states. [2020-10-14 00:06:50,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:50,788 INFO L93 Difference]: Finished difference Result 444 states and 538 transitions. [2020-10-14 00:06:50,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 00:06:50,788 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 115 [2020-10-14 00:06:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:50,790 INFO L225 Difference]: With dead ends: 444 [2020-10-14 00:06:50,790 INFO L226 Difference]: Without dead ends: 366 [2020-10-14 00:06:50,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:06:50,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-14 00:06:50,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 126. [2020-10-14 00:06:50,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-14 00:06:50,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 141 transitions. [2020-10-14 00:06:50,818 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 141 transitions. Word has length 115 [2020-10-14 00:06:50,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:50,818 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 141 transitions. [2020-10-14 00:06:50,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 00:06:50,818 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 141 transitions. [2020-10-14 00:06:50,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 00:06:50,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:50,819 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:50,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 00:06:50,819 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:50,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:50,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1840324205, now seen corresponding path program 8 times [2020-10-14 00:06:50,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:50,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596294589] [2020-10-14 00:06:50,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:50,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:50,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:52,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:52,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:55,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:55,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 00:06:55,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:06:55,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 00:06:55,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:55,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:55,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:06:55,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:06:55,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 00:06:55,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:55,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:55,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:55,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:55,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:55,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:55,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:55,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:55,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:55,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:55,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:55,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:55,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 00:06:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:55,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:55,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:55,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:55,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:55,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:55,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:55,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:55,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:55,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:55,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:55,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:55,996 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 270 proven. 77 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-10-14 00:06:55,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596294589] [2020-10-14 00:06:55,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:55,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 00:06:55,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931375902] [2020-10-14 00:06:55,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 00:06:55,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:55,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 00:06:55,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:06:55,998 INFO L87 Difference]: Start difference. First operand 126 states and 141 transitions. Second operand 12 states. [2020-10-14 00:06:56,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:56,269 INFO L93 Difference]: Finished difference Result 180 states and 207 transitions. [2020-10-14 00:06:56,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:06:56,269 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-14 00:06:56,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:56,270 INFO L225 Difference]: With dead ends: 180 [2020-10-14 00:06:56,271 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 00:06:56,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-10-14 00:06:56,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 00:06:56,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-10-14 00:06:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-14 00:06:56,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2020-10-14 00:06:56,300 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 120 [2020-10-14 00:06:56,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:56,300 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2020-10-14 00:06:56,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 00:06:56,301 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2020-10-14 00:06:56,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 00:06:56,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:56,302 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:56,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 00:06:56,302 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:56,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:56,303 INFO L82 PathProgramCache]: Analyzing trace with hash 301984175, now seen corresponding path program 9 times [2020-10-14 00:06:56,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:56,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016341871] [2020-10-14 00:06:56,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:56,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:56,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:01,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:01,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 00:07:01,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:07:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 00:07:01,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:01,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 00:07:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 00:07:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 00:07:01,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:01,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:01,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:01,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:01,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:01,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:01,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:07:01,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:01,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:01,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:01,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 00:07:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:01,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:01,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:01,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:01,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:01,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:01,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:01,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 2 proven. 532 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-14 00:07:01,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016341871] [2020-10-14 00:07:01,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:01,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 00:07:01,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642965157] [2020-10-14 00:07:01,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 00:07:01,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:01,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 00:07:01,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:07:01,655 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand 23 states. [2020-10-14 00:07:02,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:02,035 INFO L93 Difference]: Finished difference Result 452 states and 546 transitions. [2020-10-14 00:07:02,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 00:07:02,036 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 120 [2020-10-14 00:07:02,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:02,038 INFO L225 Difference]: With dead ends: 452 [2020-10-14 00:07:02,038 INFO L226 Difference]: Without dead ends: 371 [2020-10-14 00:07:02,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:07:02,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-10-14 00:07:02,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 131. [2020-10-14 00:07:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-14 00:07:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 146 transitions. [2020-10-14 00:07:02,062 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 146 transitions. Word has length 120 [2020-10-14 00:07:02,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:02,062 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 146 transitions. [2020-10-14 00:07:02,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 00:07:02,063 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 146 transitions. [2020-10-14 00:07:02,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 00:07:02,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:02,063 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:02,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 00:07:02,063 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:02,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:02,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1828381034, now seen corresponding path program 9 times [2020-10-14 00:07:02,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:02,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034439335] [2020-10-14 00:07:02,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:02,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:02,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:02,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:07,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:07,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 00:07:07,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:07:07,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 00:07:07,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:07,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:07,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:07:07,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:07:07,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 00:07:07,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:07,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:07,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:07,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:07,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:07,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:07,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:07,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:07,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:07,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:07,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 00:07:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:07,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:07,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:07,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:07,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:07,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:07,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:07,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:07,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:07,274 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 305 proven. 100 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-14 00:07:07,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034439335] [2020-10-14 00:07:07,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:07,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:07:07,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644061916] [2020-10-14 00:07:07,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:07:07,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:07,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:07:07,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=90, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:07:07,276 INFO L87 Difference]: Start difference. First operand 131 states and 146 transitions. Second operand 13 states. [2020-10-14 00:07:07,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:07,520 INFO L93 Difference]: Finished difference Result 185 states and 212 transitions. [2020-10-14 00:07:07,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:07:07,521 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 125 [2020-10-14 00:07:07,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:07,522 INFO L225 Difference]: With dead ends: 185 [2020-10-14 00:07:07,522 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 00:07:07,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:07:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 00:07:07,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-10-14 00:07:07,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-14 00:07:07,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2020-10-14 00:07:07,553 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 125 [2020-10-14 00:07:07,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:07,554 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2020-10-14 00:07:07,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:07:07,554 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2020-10-14 00:07:07,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 00:07:07,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:07,555 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:07,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 00:07:07,555 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:07,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:07,556 INFO L82 PathProgramCache]: Analyzing trace with hash 928246232, now seen corresponding path program 10 times [2020-10-14 00:07:07,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:07,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822923338] [2020-10-14 00:07:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:07,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:07,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:12,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 00:07:12,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:07:12,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 00:07:12,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:12,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:12,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 00:07:12,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 00:07:12,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 00:07:12,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:12,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:12,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:12,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:12,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:12,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:12,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:12,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:12,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:12,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 00:07:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:12,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:12,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:12,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:12,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:12,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:12,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:12,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:12,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:12,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:12,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 2 proven. 590 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2020-10-14 00:07:12,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822923338] [2020-10-14 00:07:12,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:12,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 00:07:12,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546648870] [2020-10-14 00:07:12,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 00:07:12,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:12,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 00:07:12,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:07:12,937 INFO L87 Difference]: Start difference. First operand 131 states and 145 transitions. Second operand 24 states. [2020-10-14 00:07:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:13,371 INFO L93 Difference]: Finished difference Result 460 states and 554 transitions. [2020-10-14 00:07:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 00:07:13,372 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 125 [2020-10-14 00:07:13,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:13,375 INFO L225 Difference]: With dead ends: 460 [2020-10-14 00:07:13,375 INFO L226 Difference]: Without dead ends: 376 [2020-10-14 00:07:13,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:07:13,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-10-14 00:07:13,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 136. [2020-10-14 00:07:13,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-14 00:07:13,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 151 transitions. [2020-10-14 00:07:13,411 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 151 transitions. Word has length 125 [2020-10-14 00:07:13,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:13,412 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 151 transitions. [2020-10-14 00:07:13,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 00:07:13,412 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 151 transitions. [2020-10-14 00:07:13,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 00:07:13,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:13,413 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:13,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 00:07:13,413 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:13,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:13,414 INFO L82 PathProgramCache]: Analyzing trace with hash -298219695, now seen corresponding path program 10 times [2020-10-14 00:07:13,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:13,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868034877] [2020-10-14 00:07:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:13,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:13,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:13,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:18,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 00:07:18,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:07:18,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:07:18,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:18,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:18,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 00:07:18,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:07:18,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 00:07:18,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:18,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:18,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:18,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:18,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:18,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:18,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:18,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:18,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:18,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:18,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:18,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:18,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:07:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:18,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:18,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:18,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:18,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:18,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:18,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:18,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:18,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:18,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1097 backedges. 2 proven. 525 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2020-10-14 00:07:18,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868034877] [2020-10-14 00:07:18,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:18,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 00:07:18,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820953393] [2020-10-14 00:07:18,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 00:07:18,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:18,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 00:07:18,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:07:18,655 INFO L87 Difference]: Start difference. First operand 136 states and 151 transitions. Second operand 17 states. [2020-10-14 00:07:19,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:19,070 INFO L93 Difference]: Finished difference Result 189 states and 217 transitions. [2020-10-14 00:07:19,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 00:07:19,070 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 130 [2020-10-14 00:07:19,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:19,072 INFO L225 Difference]: With dead ends: 189 [2020-10-14 00:07:19,072 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 00:07:19,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2020-10-14 00:07:19,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 00:07:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2020-10-14 00:07:19,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-14 00:07:19,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 151 transitions. [2020-10-14 00:07:19,099 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 151 transitions. Word has length 130 [2020-10-14 00:07:19,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:19,100 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 151 transitions. [2020-10-14 00:07:19,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 00:07:19,100 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 151 transitions. [2020-10-14 00:07:19,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 00:07:19,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:19,101 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:19,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 00:07:19,101 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:19,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:19,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1836559725, now seen corresponding path program 11 times [2020-10-14 00:07:19,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:19,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755878888] [2020-10-14 00:07:19,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:19,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:19,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:24,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:24,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 00:07:24,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:07:24,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 00:07:24,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:24,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:07:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 00:07:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 00:07:24,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:24,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:24,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:24,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:24,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:24,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:24,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:24,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:24,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:24,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:24,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:24,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:24,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:24,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:07:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:24,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:24,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:24,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:24,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:24,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:24,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:24,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:24,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1097 backedges. 2 proven. 651 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2020-10-14 00:07:24,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755878888] [2020-10-14 00:07:24,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:24,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 00:07:24,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305278325] [2020-10-14 00:07:24,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 00:07:24,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:24,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 00:07:24,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:07:24,590 INFO L87 Difference]: Start difference. First operand 136 states and 151 transitions. Second operand 25 states. [2020-10-14 00:07:25,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:25,143 INFO L93 Difference]: Finished difference Result 508 states and 616 transitions. [2020-10-14 00:07:25,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:07:25,144 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 130 [2020-10-14 00:07:25,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:25,147 INFO L225 Difference]: With dead ends: 508 [2020-10-14 00:07:25,147 INFO L226 Difference]: Without dead ends: 421 [2020-10-14 00:07:25,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:07:25,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-14 00:07:25,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 141. [2020-10-14 00:07:25,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 00:07:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 157 transitions. [2020-10-14 00:07:25,178 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 157 transitions. Word has length 130 [2020-10-14 00:07:25,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:25,178 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 157 transitions. [2020-10-14 00:07:25,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 00:07:25,178 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 157 transitions. [2020-10-14 00:07:25,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 00:07:25,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:25,179 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:25,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 00:07:25,179 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:25,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:25,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1765122934, now seen corresponding path program 11 times [2020-10-14 00:07:25,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:25,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198689249] [2020-10-14 00:07:25,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:25,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:25,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:25,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:30,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:30,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 00:07:30,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:07:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 00:07:30,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:30,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 00:07:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:07:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 00:07:30,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:30,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:30,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:30,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:30,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:30,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:30,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:30,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:30,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:30,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:30,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:30,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:30,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:30,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 00:07:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:30,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:30,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:30,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:30,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:30,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:30,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:30,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:30,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:30,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1204 backedges. 2 proven. 589 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2020-10-14 00:07:30,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198689249] [2020-10-14 00:07:30,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:30,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:07:30,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366298315] [2020-10-14 00:07:30,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:07:30,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:30,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:07:30,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:07:30,465 INFO L87 Difference]: Start difference. First operand 141 states and 157 transitions. Second operand 18 states. [2020-10-14 00:07:30,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:30,940 INFO L93 Difference]: Finished difference Result 197 states and 227 transitions. [2020-10-14 00:07:30,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 00:07:30,940 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 135 [2020-10-14 00:07:30,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:30,942 INFO L225 Difference]: With dead ends: 197 [2020-10-14 00:07:30,942 INFO L226 Difference]: Without dead ends: 178 [2020-10-14 00:07:30,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2020-10-14 00:07:30,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-14 00:07:30,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 141. [2020-10-14 00:07:30,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 00:07:30,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 157 transitions. [2020-10-14 00:07:30,983 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 157 transitions. Word has length 135 [2020-10-14 00:07:30,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:30,984 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 157 transitions. [2020-10-14 00:07:30,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:07:30,984 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 157 transitions. [2020-10-14 00:07:30,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 00:07:30,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:30,985 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:30,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 00:07:30,985 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:30,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:30,986 INFO L82 PathProgramCache]: Analyzing trace with hash 378337524, now seen corresponding path program 12 times [2020-10-14 00:07:30,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:30,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202384229] [2020-10-14 00:07:30,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:36,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:36,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 00:07:36,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:07:36,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 00:07:36,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:36,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:36,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 00:07:36,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 00:07:36,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 00:07:36,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:36,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:36,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:36,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:36,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:36,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:36,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:36,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:36,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:36,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:36,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:36,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:36,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 00:07:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:36,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:36,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:36,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:36,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:36,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:36,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:36,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:36,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:36,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:36,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:36,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1204 backedges. 2 proven. 715 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2020-10-14 00:07:36,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202384229] [2020-10-14 00:07:36,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:36,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 00:07:36,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185171067] [2020-10-14 00:07:36,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 00:07:36,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:36,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 00:07:36,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:07:36,422 INFO L87 Difference]: Start difference. First operand 141 states and 157 transitions. Second operand 26 states. [2020-10-14 00:07:36,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:36,934 INFO L93 Difference]: Finished difference Result 559 states and 682 transitions. [2020-10-14 00:07:36,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 00:07:36,935 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 135 [2020-10-14 00:07:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:36,938 INFO L225 Difference]: With dead ends: 559 [2020-10-14 00:07:36,938 INFO L226 Difference]: Without dead ends: 469 [2020-10-14 00:07:36,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:07:36,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-10-14 00:07:36,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 146. [2020-10-14 00:07:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-14 00:07:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 163 transitions. [2020-10-14 00:07:36,971 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 163 transitions. Word has length 135 [2020-10-14 00:07:36,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:36,971 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 163 transitions. [2020-10-14 00:07:36,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 00:07:36,971 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 163 transitions. [2020-10-14 00:07:36,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 00:07:36,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:36,972 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:36,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 00:07:36,972 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:36,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:36,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1883993675, now seen corresponding path program 12 times [2020-10-14 00:07:36,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:36,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506315922] [2020-10-14 00:07:36,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:37,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:37,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:42,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:42,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 00:07:42,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:07:42,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 00:07:42,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:42,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:42,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:07:42,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:07:42,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:07:42,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:42,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:42,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:42,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:42,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:42,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:42,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:42,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:42,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:42,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:42,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:42,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:42,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:42,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 00:07:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:42,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:42,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:42,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:42,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:42,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:42,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:42,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:42,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 398 proven. 126 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2020-10-14 00:07:42,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506315922] [2020-10-14 00:07:42,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:42,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:07:42,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032619450] [2020-10-14 00:07:42,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:07:42,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:42,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:07:42,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:07:42,194 INFO L87 Difference]: Start difference. First operand 146 states and 163 transitions. Second operand 14 states. [2020-10-14 00:07:42,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:42,554 INFO L93 Difference]: Finished difference Result 206 states and 237 transitions. [2020-10-14 00:07:42,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:07:42,554 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2020-10-14 00:07:42,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:42,556 INFO L225 Difference]: With dead ends: 206 [2020-10-14 00:07:42,556 INFO L226 Difference]: Without dead ends: 146 [2020-10-14 00:07:42,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:07:42,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-14 00:07:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-14 00:07:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-14 00:07:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2020-10-14 00:07:42,596 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 140 [2020-10-14 00:07:42,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:42,597 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2020-10-14 00:07:42,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:07:42,597 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2020-10-14 00:07:42,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 00:07:42,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:42,598 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:42,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 00:07:42,599 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:42,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:42,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1977244535, now seen corresponding path program 13 times [2020-10-14 00:07:42,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:42,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647478183] [2020-10-14 00:07:42,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:42,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:42,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:47,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:47,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 00:07:47,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:07:47,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5177 [2020-10-14 00:07:47,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:47,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:47,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 00:07:47,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 00:07:47,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 00:07:47,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:48,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:48,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:48,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:48,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:48,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:48,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:48,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:48,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:48,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:48,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:48,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:48,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:48,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 00:07:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:48,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:48,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:48,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:48,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:48,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:48,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:48,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:48,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:48,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:48,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:48,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:48,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 2 proven. 782 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2020-10-14 00:07:48,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647478183] [2020-10-14 00:07:48,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:48,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 00:07:48,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141892252] [2020-10-14 00:07:48,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 00:07:48,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:48,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 00:07:48,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:07:48,179 INFO L87 Difference]: Start difference. First operand 146 states and 162 transitions. Second operand 27 states. [2020-10-14 00:07:48,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:48,808 INFO L93 Difference]: Finished difference Result 567 states and 690 transitions. [2020-10-14 00:07:48,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 00:07:48,809 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 140 [2020-10-14 00:07:48,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:48,812 INFO L225 Difference]: With dead ends: 567 [2020-10-14 00:07:48,813 INFO L226 Difference]: Without dead ends: 474 [2020-10-14 00:07:48,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:07:48,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-10-14 00:07:48,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 151. [2020-10-14 00:07:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-14 00:07:48,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 168 transitions. [2020-10-14 00:07:48,868 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 168 transitions. Word has length 140 [2020-10-14 00:07:48,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:48,868 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 168 transitions. [2020-10-14 00:07:48,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 00:07:48,869 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 168 transitions. [2020-10-14 00:07:48,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 00:07:48,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:48,870 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:48,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 00:07:48,870 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:48,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:48,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1936553550, now seen corresponding path program 13 times [2020-10-14 00:07:48,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:48,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562280204] [2020-10-14 00:07:48,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:48,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:48,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:50,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:53,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:53,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 00:07:53,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:07:53,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-14 00:07:53,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:53,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 00:07:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:07:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 00:07:53,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0