/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=BIGGEST --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-crafted/xor4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 09:39:03,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 09:39:03,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 09:39:03,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 09:39:03,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 09:39:03,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 09:39:03,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 09:39:03,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 09:39:03,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 09:39:03,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 09:39:03,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 09:39:03,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 09:39:03,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 09:39:03,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 09:39:03,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 09:39:03,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 09:39:03,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 09:39:03,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 09:39:03,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 09:39:03,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 09:39:03,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 09:39:03,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 09:39:03,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 09:39:03,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 09:39:03,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 09:39:03,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 09:39:03,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 09:39:03,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 09:39:03,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 09:39:03,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 09:39:03,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 09:39:03,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 09:39:03,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 09:39:03,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 09:39:03,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 09:39:03,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 09:39:03,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 09:39:03,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 09:39:03,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 09:39:03,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 09:39:03,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 09:39:03,447 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 [2020-10-12 09:39:03,491 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 09:39:03,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 09:39:03,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 09:39:03,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 09:39:03,494 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 09:39:03,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 09:39:03,495 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 09:39:03,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 09:39:03,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 09:39:03,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 09:39:03,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 09:39:03,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 09:39:03,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 09:39:03,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 09:39:03,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 09:39:03,498 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 09:39:03,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 09:39:03,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 09:39:03,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 09:39:03,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 09:39:03,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 09:39:03,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:39:03,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 09:39:03,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 09:39:03,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 09:39:03,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 09:39:03,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 09:39:03,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 09:39:03,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 09:39:03,501 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 09:39:03,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 09:39:03,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 09:39:03,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 09:39:03,836 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 09:39:03,836 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 09:39:03,837 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor4.i [2020-10-12 09:39:03,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dab19bb68/ec3b098668534f629fe56489838ff21a/FLAG96f012f20 [2020-10-12 09:39:04,307 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 09:39:04,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/xor4.i [2020-10-12 09:39:04,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dab19bb68/ec3b098668534f629fe56489838ff21a/FLAG96f012f20 [2020-10-12 09:39:04,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dab19bb68/ec3b098668534f629fe56489838ff21a [2020-10-12 09:39:04,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 09:39:04,689 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 09:39:04,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 09:39:04,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 09:39:04,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 09:39:04,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:39:04" (1/1) ... [2020-10-12 09:39:04,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b0c8ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:04, skipping insertion in model container [2020-10-12 09:39:04,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:39:04" (1/1) ... [2020-10-12 09:39:04,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 09:39:04,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 09:39:04,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:39:04,932 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 09:39:04,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:39:05,001 INFO L208 MainTranslator]: Completed translation [2020-10-12 09:39:05,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:05 WrapperNode [2020-10-12 09:39:05,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 09:39:05,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 09:39:05,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 09:39:05,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 09:39:05,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:05" (1/1) ... [2020-10-12 09:39:05,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:05" (1/1) ... [2020-10-12 09:39:05,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:05" (1/1) ... [2020-10-12 09:39:05,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:05" (1/1) ... [2020-10-12 09:39:05,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:05" (1/1) ... [2020-10-12 09:39:05,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:05" (1/1) ... [2020-10-12 09:39:05,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:05" (1/1) ... [2020-10-12 09:39:05,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 09:39:05,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 09:39:05,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 09:39:05,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 09:39:05,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:05" (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 [2020-10-12 09:39:05,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 09:39:05,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 09:39:05,264 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2020-10-12 09:39:05,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 09:39:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 09:39:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 09:39:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2020-10-12 09:39:05,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 09:39:05,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 09:39:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 09:39:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 09:39:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 09:39:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 09:39:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 09:39:05,543 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 09:39:05,543 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 09:39:05,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:39:05 BoogieIcfgContainer [2020-10-12 09:39:05,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 09:39:05,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 09:39:05,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 09:39:05,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 09:39:05,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:39:04" (1/3) ... [2020-10-12 09:39:05,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79903e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:39:05, skipping insertion in model container [2020-10-12 09:39:05,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:05" (2/3) ... [2020-10-12 09:39:05,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79903e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:39:05, skipping insertion in model container [2020-10-12 09:39:05,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:39:05" (3/3) ... [2020-10-12 09:39:05,559 INFO L109 eAbstractionObserver]: Analyzing ICFG xor4.i [2020-10-12 09:39:05,572 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 09:39:05,583 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 09:39:05,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 09:39:05,631 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 09:39:05,631 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 09:39:05,631 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 09:39:05,631 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 09:39:05,631 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 09:39:05,632 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 09:39:05,632 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 09:39:05,632 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 09:39:05,658 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-12 09:39:05,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 09:39:05,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:05,676 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:05,679 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:05,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:05,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1461178031, now seen corresponding path program 1 times [2020-10-12 09:39:05,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:05,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417648523] [2020-10-12 09:39:05,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:05,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:05,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:05,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:05,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:06,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:39:06,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:39:06,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-12 09:39:06,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 09:39:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:06,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 09:39:06,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:06,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:06,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:06,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:06,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 09:39:06,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:06,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:06,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:06,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:06,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:06,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:39:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:06,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:06,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:39:06,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:06,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 09:39:06,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:06,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:06,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:06,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:06,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 09:39:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:06,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:06,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:39:06,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:06,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 09:39:06,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:06,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:06,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:06,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:06,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 09:39:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:06,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:06,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:39:06,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:06,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 09:39:06,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:06,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 09:39:06,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:06,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 09:39:06,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417648523] [2020-10-12 09:39:06,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 09:39:06,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 09:39:06,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946076397] [2020-10-12 09:39:06,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 09:39:06,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:06,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 09:39:06,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 09:39:06,493 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-12 09:39:06,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:06,594 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-12 09:39:06,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 09:39:06,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-12 09:39:06,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:06,605 INFO L225 Difference]: With dead ends: 54 [2020-10-12 09:39:06,606 INFO L226 Difference]: Without dead ends: 26 [2020-10-12 09:39:06,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 09:39:06,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-12 09:39:06,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-12 09:39:06,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-12 09:39:06,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-12 09:39:06,656 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-12 09:39:06,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:06,657 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-12 09:39:06,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 09:39:06,657 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-12 09:39:06,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 09:39:06,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:06,660 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:06,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 09:39:06,661 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:06,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:06,661 INFO L82 PathProgramCache]: Analyzing trace with hash -595992629, now seen corresponding path program 1 times [2020-10-12 09:39:06,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:06,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596246358] [2020-10-12 09:39:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:06,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:07,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:07,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:07,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:39:07,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:39:07,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1167 [2020-10-12 09:39:07,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:39:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:39:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:39:07,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:07,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:07,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:07,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:07,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:07,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:07,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 09:39:07,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:07,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:07,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:07,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:07,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:07,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:39:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:07,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:07,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:07,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:39:07,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:07,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 09:39:07,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:39:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:39:07,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:07,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 09:39:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:07,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:07,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:07,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:07,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:39:07,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:07,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 09:39:07,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:39:07,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:07,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:39:07,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:07,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 09:39:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:07,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:07,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:07,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:07,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:39:07,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:07,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 09:39:07,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:07,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:39:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:39:07,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 09:39:07,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596246358] [2020-10-12 09:39:07,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 09:39:07,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 09:39:07,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196742100] [2020-10-12 09:39:07,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 09:39:07,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:07,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 09:39:07,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 09:39:07,973 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-12 09:39:08,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:08,113 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-12 09:39:08,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 09:39:08,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-12 09:39:08,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:08,117 INFO L225 Difference]: With dead ends: 45 [2020-10-12 09:39:08,118 INFO L226 Difference]: Without dead ends: 28 [2020-10-12 09:39:08,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 09:39:08,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-12 09:39:08,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-12 09:39:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-12 09:39:08,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-12 09:39:08,137 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-12 09:39:08,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:08,137 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-12 09:39:08,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 09:39:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-12 09:39:08,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 09:39:08,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:08,140 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:08,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 09:39:08,141 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:08,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:08,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1309759401, now seen corresponding path program 1 times [2020-10-12 09:39:08,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:08,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732002188] [2020-10-12 09:39:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:08,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:08,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:08,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:08,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:08,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:10,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:10,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:39:10,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:39:10,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2280 [2020-10-12 09:39:10,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:39:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 09:39:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:39:10,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:10,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:10,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:10,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:10,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:10,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:10,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:39:10,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:10,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:10,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:10,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:10,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:10,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:39:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:10,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:10,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:10,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:10,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:39:10,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:10,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 09:39:10,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:39:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:39:10,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:10,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 09:39:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:10,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:10,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:10,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:10,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:39:10,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:10,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 09:39:10,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:39:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:39:10,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:10,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 09:39:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:10,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:10,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:10,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:39:10,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:10,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 09:39:10,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:39:10,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:10,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:39:10,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 09:39:10,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732002188] [2020-10-12 09:39:10,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:10,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 09:39:10,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780440288] [2020-10-12 09:39:10,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 09:39:10,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:10,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 09:39:10,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 09:39:10,577 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 5 states. [2020-10-12 09:39:10,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:10,723 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-10-12 09:39:10,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 09:39:10,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-12 09:39:10,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:10,725 INFO L225 Difference]: With dead ends: 48 [2020-10-12 09:39:10,725 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 09:39:10,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:39:10,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 09:39:10,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-12 09:39:10,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 09:39:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-12 09:39:10,734 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 38 [2020-10-12 09:39:10,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:10,734 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-12 09:39:10,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 09:39:10,734 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-12 09:39:10,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 09:39:10,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:10,736 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:10,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 09:39:10,737 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:10,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:10,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1311690489, now seen corresponding path program 2 times [2020-10-12 09:39:10,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:10,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502598103] [2020-10-12 09:39:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:10,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:10,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:10,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:10,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:11,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:15,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:39:15,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:39:15,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4682 [2020-10-12 09:39:15,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:39:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:39:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:39:15,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:15,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:15,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:15,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:15,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:15,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:39:15,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:15,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:15,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:15,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:15,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:15,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:39:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:15,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:15,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:39:15,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:15,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 09:39:15,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:15,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:39:15,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:15,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:39:15,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:15,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 09:39:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:15,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:15,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:39:15,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:15,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 09:39:15,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:15,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:39:15,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:15,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:39:15,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:15,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 09:39:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:15,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:15,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:39:15,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:15,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 09:39:15,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:39:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:39:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:15,581 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 09:39:15,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502598103] [2020-10-12 09:39:15,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:15,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 09:39:15,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159948803] [2020-10-12 09:39:15,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:39:15,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:15,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:39:15,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:39:15,585 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-12 09:39:15,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:15,728 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-12 09:39:15,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 09:39:15,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-12 09:39:15,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:15,729 INFO L225 Difference]: With dead ends: 52 [2020-10-12 09:39:15,730 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 09:39:15,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:39:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 09:39:15,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-12 09:39:15,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 09:39:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-12 09:39:15,737 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 44 [2020-10-12 09:39:15,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:15,737 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-12 09:39:15,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:39:15,738 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-12 09:39:15,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 09:39:15,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:15,739 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:15,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 09:39:15,740 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:15,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:15,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1548340197, now seen corresponding path program 3 times [2020-10-12 09:39:15,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:15,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465963497] [2020-10-12 09:39:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:15,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:16,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:20,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:20,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:39:20,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:39:20,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 09:39:20,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:39:20,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 09:39:20,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:39:20,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:20,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:20,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:20,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:20,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:20,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:20,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:39:20,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:20,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:20,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:20,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:20,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:20,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:39:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:20,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:20,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:20,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:20,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:39:20,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:20,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 09:39:20,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:20,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:39:20,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:20,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:39:20,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:20,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 09:39:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:20,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:20,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:20,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:39:20,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:20,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 09:39:20,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:39:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:39:20,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:20,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 09:39:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:20,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:20,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:20,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:20,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:39:20,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:20,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 09:39:20,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:20,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:39:20,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:20,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:39:20,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 09:39:20,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465963497] [2020-10-12 09:39:20,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:20,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 09:39:20,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268836179] [2020-10-12 09:39:20,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 09:39:20,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:20,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 09:39:20,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:39:20,931 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-12 09:39:21,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:21,094 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-12 09:39:21,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 09:39:21,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-12 09:39:21,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:21,096 INFO L225 Difference]: With dead ends: 56 [2020-10-12 09:39:21,096 INFO L226 Difference]: Without dead ends: 34 [2020-10-12 09:39:21,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:39:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-12 09:39:21,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-12 09:39:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 09:39:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-12 09:39:21,104 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 50 [2020-10-12 09:39:21,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:21,104 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-12 09:39:21,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 09:39:21,104 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-12 09:39:21,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 09:39:21,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:21,106 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:21,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 09:39:21,106 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:21,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:21,107 INFO L82 PathProgramCache]: Analyzing trace with hash 916686915, now seen corresponding path program 4 times [2020-10-12 09:39:21,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:21,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926619237] [2020-10-12 09:39:21,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:21,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:21,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:21,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:21,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:21,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:26,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:39:26,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:39:26,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:39:26,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:26,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:39:26,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-12 09:39:26,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:39:26,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:26,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:26,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:26,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:26,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:26,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:39:26,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:26,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:26,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:26,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:26,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:39:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:26,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:26,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:39:26,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:26,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 09:39:26,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:39:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:39:26,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:26,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 09:39:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:26,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:26,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:39:26,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:26,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 09:39:26,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:39:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:26,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:39:26,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:26,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 09:39:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:26,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:26,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:39:26,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:26,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 09:39:26,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:39:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:39:26,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 09:39:26,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926619237] [2020-10-12 09:39:26,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:26,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 09:39:26,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565526757] [2020-10-12 09:39:26,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 09:39:26,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:26,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 09:39:26,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 09:39:26,329 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-12 09:39:26,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:26,543 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-12 09:39:26,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 09:39:26,544 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-12 09:39:26,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:26,545 INFO L225 Difference]: With dead ends: 60 [2020-10-12 09:39:26,545 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 09:39:26,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:39:26,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 09:39:26,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-12 09:39:26,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-12 09:39:26,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-12 09:39:26,560 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-12 09:39:26,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:26,561 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-12 09:39:26,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 09:39:26,561 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-12 09:39:26,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 09:39:26,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:26,564 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:26,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 09:39:26,565 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:26,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:26,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1264663007, now seen corresponding path program 5 times [2020-10-12 09:39:26,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:26,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645587363] [2020-10-12 09:39:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:26,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:28,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:31,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:31,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:39:31,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:39:31,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:39:31,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:31,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:39:31,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:39:31,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:39:31,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:31,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:31,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:31,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:31,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:31,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:31,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:39:31,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:31,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:31,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:39:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:31,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:31,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:31,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:39:31,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:31,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 09:39:31,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:31,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:39:31,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:31,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:39:31,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:31,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 09:39:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:31,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:31,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:31,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:31,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:39:31,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:31,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 09:39:31,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:39:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:39:31,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:31,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 09:39:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:31,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:31,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:31,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:31,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:39:31,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:31,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 09:39:31,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:31,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:39:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:39:31,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-12 09:39:31,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645587363] [2020-10-12 09:39:31,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:31,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 09:39:31,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369235455] [2020-10-12 09:39:31,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 09:39:31,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:31,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 09:39:31,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:39:31,760 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-12 09:39:31,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:31,955 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-12 09:39:31,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 09:39:31,955 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-12 09:39:31,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:31,956 INFO L225 Difference]: With dead ends: 64 [2020-10-12 09:39:31,956 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 09:39:31,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:39:31,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 09:39:31,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-12 09:39:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 09:39:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-12 09:39:31,963 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 62 [2020-10-12 09:39:31,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:31,963 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-12 09:39:31,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 09:39:31,964 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-12 09:39:31,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 09:39:31,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:31,965 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:31,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 09:39:31,965 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:31,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:31,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1251206527, now seen corresponding path program 6 times [2020-10-12 09:39:31,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:31,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672737915] [2020-10-12 09:39:31,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:31,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:31,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:31,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:31,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:33,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:36,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:36,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:39:36,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:39:36,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 09:39:36,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:36,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:39:36,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 09:39:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:39:36,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:36,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:36,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:36,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:36,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:36,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:36,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:39:36,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:36,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:36,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:36,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:36,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:37,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:39:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:37,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:37,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:37,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 09:39:37,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:37,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 09:39:37,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:37,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:39:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:39:37,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:37,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 09:39:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:37,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:37,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:37,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:37,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 09:39:37,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:37,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 09:39:37,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:39:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:39:37,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:37,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 09:39:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:37,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:37,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:37,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 09:39:37,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:37,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 09:39:37,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:37,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:39:37,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:37,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:39:37,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:37,180 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 09:39:37,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672737915] [2020-10-12 09:39:37,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:37,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 09:39:37,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696490859] [2020-10-12 09:39:37,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 09:39:37,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:37,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 09:39:37,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:39:37,184 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-10-12 09:39:37,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:37,389 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-12 09:39:37,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 09:39:37,390 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-12 09:39:37,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:37,391 INFO L225 Difference]: With dead ends: 68 [2020-10-12 09:39:37,391 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 09:39:37,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:39:37,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 09:39:37,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-12 09:39:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 09:39:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-12 09:39:37,403 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 68 [2020-10-12 09:39:37,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:37,407 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-12 09:39:37,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 09:39:37,407 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-12 09:39:37,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 09:39:37,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:37,409 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:37,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 09:39:37,409 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:37,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:37,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1668499037, now seen corresponding path program 7 times [2020-10-12 09:39:37,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:37,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3294497] [2020-10-12 09:39:37,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:37,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:37,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:37,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:37,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:39,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:42,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:42,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 09:39:42,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:39:42,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:39:42,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:42,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:39:42,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-12 09:39:42,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:39:42,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:42,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:42,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:42,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:42,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:42,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:42,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:39:42,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:42,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:42,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:42,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:42,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:42,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:39:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:42,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:42,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:42,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:42,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:39:42,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:42,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 09:39:42,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:42,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:39:42,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:42,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:39:42,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:42,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 09:39:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:42,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:42,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:42,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:42,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:39:42,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:42,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 09:39:42,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:42,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:39:42,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:42,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:39:42,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:42,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 09:39:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:42,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:42,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:42,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:39:42,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:42,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 09:39:42,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:39:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:39:42,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-12 09:39:42,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3294497] [2020-10-12 09:39:42,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:42,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 09:39:42,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998147051] [2020-10-12 09:39:42,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 09:39:42,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:42,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 09:39:42,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:39:42,647 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-12 09:39:42,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:42,878 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-12 09:39:42,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 09:39:42,878 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-12 09:39:42,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:42,880 INFO L225 Difference]: With dead ends: 72 [2020-10-12 09:39:42,880 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 09:39:42,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-12 09:39:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 09:39:42,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-12 09:39:42,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 09:39:42,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-12 09:39:42,890 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 74 [2020-10-12 09:39:42,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:42,890 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-12 09:39:42,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 09:39:42,890 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-12 09:39:42,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 09:39:42,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:42,891 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:42,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 09:39:42,892 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:42,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:42,892 INFO L82 PathProgramCache]: Analyzing trace with hash -691713861, now seen corresponding path program 8 times [2020-10-12 09:39:42,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:42,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836143658] [2020-10-12 09:39:42,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:42,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:42,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:42,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:42,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:45,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:47,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:47,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 09:39:47,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:39:47,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 09:39:47,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:39:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 09:39:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:39:47,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:47,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:47,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:47,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:47,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:47,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:47,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:39:47,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:47,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:47,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:47,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:47,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:39:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:47,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:47,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:47,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:47,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:39:47,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:47,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 09:39:47,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:47,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:39:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:39:47,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 09:39:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:48,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:48,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:48,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:39:48,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:48,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 09:39:48,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:39:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:39:48,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:48,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 09:39:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:48,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:48,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:48,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:48,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:39:48,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:48,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 09:39:48,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:48,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:39:48,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:48,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:39:48,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-12 09:39:48,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836143658] [2020-10-12 09:39:48,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:48,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 09:39:48,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607228983] [2020-10-12 09:39:48,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 09:39:48,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:48,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 09:39:48,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 09:39:48,114 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2020-10-12 09:39:48,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:48,369 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-12 09:39:48,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:39:48,370 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-12 09:39:48,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:48,371 INFO L225 Difference]: With dead ends: 76 [2020-10-12 09:39:48,371 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 09:39:48,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:39:48,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 09:39:48,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-12 09:39:48,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 09:39:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-12 09:39:48,379 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 80 [2020-10-12 09:39:48,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:48,379 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-12 09:39:48,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 09:39:48,379 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-12 09:39:48,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 09:39:48,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:48,381 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:48,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 09:39:48,381 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:48,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:48,381 INFO L82 PathProgramCache]: Analyzing trace with hash -559264615, now seen corresponding path program 9 times [2020-10-12 09:39:48,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:48,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529538105] [2020-10-12 09:39:48,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:48,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:48,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:48,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:48,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:51,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:53,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:53,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 09:39:53,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:39:53,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:39:53,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:39:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-12 09:39:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:39:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:53,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:53,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:53,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:53,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:53,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:53,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:39:53,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:53,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:53,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:39:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:53,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:53,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:53,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:53,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:39:53,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:53,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 09:39:53,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:39:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:39:53,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:53,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 09:39:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:53,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:53,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:53,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:53,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:39:53,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:53,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 09:39:53,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:39:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:53,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:39:53,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:53,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 09:39:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:53,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:53,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:53,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:39:53,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:53,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 09:39:53,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:39:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:39:53,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:53,612 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 09:39:53,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529538105] [2020-10-12 09:39:53,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:53,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 09:39:53,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454539746] [2020-10-12 09:39:53,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 09:39:53,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:53,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 09:39:53,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:39:53,614 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-12 09:39:53,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:53,876 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-12 09:39:53,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 09:39:53,877 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-12 09:39:53,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:53,878 INFO L225 Difference]: With dead ends: 80 [2020-10-12 09:39:53,878 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 09:39:53,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:39:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 09:39:53,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-12 09:39:53,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 09:39:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-12 09:39:53,893 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 86 [2020-10-12 09:39:53,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:53,893 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-12 09:39:53,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 09:39:53,894 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-12 09:39:53,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 09:39:53,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:53,899 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:53,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 09:39:53,899 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:53,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:53,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1915047433, now seen corresponding path program 10 times [2020-10-12 09:39:53,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:53,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123944415] [2020-10-12 09:39:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:53,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:53,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:53,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:53,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:57,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:58,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:58,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 09:39:58,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:39:58,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 09:39:58,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:39:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-12 09:39:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:39:58,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:58,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:58,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:58,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:58,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:58,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:58,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:39:58,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:58,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:58,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:39:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:58,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:58,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:58,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:58,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:39:58,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:58,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 09:39:58,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:39:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:39:58,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:59,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 09:39:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:59,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:59,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:39:59,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:59,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 09:39:59,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:59,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:39:59,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:59,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:39:59,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:59,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 09:39:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:59,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:59,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:59,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:59,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:39:59,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:59,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 09:39:59,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:59,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:39:59,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:59,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:39:59,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:59,161 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-12 09:39:59,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123944415] [2020-10-12 09:39:59,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:59,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 09:39:59,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697090522] [2020-10-12 09:39:59,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 09:39:59,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:59,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 09:39:59,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:39:59,164 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-12 09:39:59,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:59,440 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-12 09:39:59,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:39:59,441 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-12 09:39:59,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:59,442 INFO L225 Difference]: With dead ends: 84 [2020-10-12 09:39:59,442 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 09:39:59,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:39:59,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 09:39:59,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-12 09:39:59,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 09:39:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-12 09:39:59,449 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 92 [2020-10-12 09:39:59,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:59,449 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-12 09:39:59,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 09:39:59,449 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-12 09:39:59,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 09:39:59,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:59,450 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:59,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 09:39:59,451 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:59,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:59,451 INFO L82 PathProgramCache]: Analyzing trace with hash -978921259, now seen corresponding path program 11 times [2020-10-12 09:39:59,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:59,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207433334] [2020-10-12 09:39:59,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:59,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:59,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:59,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:04,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:04,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:04,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 09:40:04,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:40:04,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:40:04,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:04,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:40:04,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:40:04,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:40:04,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:04,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:04,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:04,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:04,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:04,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:04,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:04,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:04,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:04,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:40:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:04,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:04,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:04,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:40:04,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:04,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 09:40:04,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:40:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:40:04,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:04,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 09:40:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:04,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:04,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:04,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:04,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:40:04,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:04,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 09:40:04,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:40:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:40:04,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:04,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 09:40:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:04,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:04,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:04,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:04,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:40:04,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:04,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 09:40:04,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:40:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:40:04,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 09:40:04,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207433334] [2020-10-12 09:40:04,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:04,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 09:40:04,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823948078] [2020-10-12 09:40:04,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 09:40:04,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:04,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 09:40:04,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:40:04,713 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 15 states. [2020-10-12 09:40:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:05,036 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-12 09:40:05,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 09:40:05,037 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2020-10-12 09:40:05,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:05,038 INFO L225 Difference]: With dead ends: 88 [2020-10-12 09:40:05,038 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 09:40:05,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:40:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 09:40:05,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-12 09:40:05,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 09:40:05,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-12 09:40:05,050 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 98 [2020-10-12 09:40:05,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:05,050 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-12 09:40:05,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 09:40:05,051 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-12 09:40:05,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 09:40:05,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:05,054 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:40:05,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 09:40:05,054 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:05,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:05,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1409867469, now seen corresponding path program 12 times [2020-10-12 09:40:05,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:05,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389523787] [2020-10-12 09:40:05,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:05,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:05,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:05,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:05,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:10,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:10,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 09:40:10,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:40:10,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:40:10,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:40:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 09:40:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:40:10,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:10,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:10,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:10,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:10,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:10,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:10,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:10,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:10,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:40:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:10,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:10,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:10,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:10,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:40:10,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:10,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 09:40:10,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:40:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:40:10,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:10,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 09:40:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:10,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:10,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:10,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:40:10,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:10,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 09:40:10,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:10,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:40:10,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:10,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:40:10,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:10,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 09:40:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:10,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:10,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:10,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:10,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:40:10,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:10,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 09:40:10,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:10,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:40:10,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:10,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:40:10,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 09:40:10,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389523787] [2020-10-12 09:40:10,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:10,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 09:40:10,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977835464] [2020-10-12 09:40:10,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 09:40:10,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:10,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 09:40:10,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 09:40:10,421 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-12 09:40:10,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:10,839 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-12 09:40:10,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 09:40:10,840 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-10-12 09:40:10,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:10,841 INFO L225 Difference]: With dead ends: 92 [2020-10-12 09:40:10,841 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 09:40:10,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:40:10,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 09:40:10,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-12 09:40:10,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 09:40:10,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-12 09:40:10,848 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 104 [2020-10-12 09:40:10,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:10,848 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-12 09:40:10,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 09:40:10,848 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-12 09:40:10,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 09:40:10,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:10,850 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:40:10,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 09:40:10,850 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:10,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:10,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1588860143, now seen corresponding path program 13 times [2020-10-12 09:40:10,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:10,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718884023] [2020-10-12 09:40:10,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:10,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:10,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:10,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:10,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:15,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:15,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 09:40:15,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:40:15,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:40:15,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:15,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:40:15,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-12 09:40:15,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:40:15,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:15,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:15,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:15,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:15,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:15,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:15,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:15,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:15,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:15,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:15,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:40:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:15,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:15,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:15,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:15,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:40:15,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:15,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-12 09:40:15,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:40:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:15,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:40:15,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:40:16,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 09:40:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:16,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:16,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:16,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:40:16,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:16,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 09:40:16,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:16,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:40:16,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:16,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:40:16,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:40:16,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 09:40:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:16,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:16,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:16,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:40:16,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:16,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 09:40:16,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:40:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:16,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:40:16,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-12 09:40:16,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718884023] [2020-10-12 09:40:16,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:16,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 09:40:16,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285997880] [2020-10-12 09:40:16,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 09:40:16,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:16,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 09:40:16,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:40:16,352 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-10-12 09:40:16,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:16,717 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-12 09:40:16,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 09:40:16,717 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-12 09:40:16,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:16,718 INFO L225 Difference]: With dead ends: 96 [2020-10-12 09:40:16,718 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 09:40:16,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-12 09:40:16,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 09:40:16,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-12 09:40:16,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 09:40:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-12 09:40:16,725 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 110 [2020-10-12 09:40:16,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:16,726 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-12 09:40:16,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 09:40:16,726 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-12 09:40:16,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 09:40:16,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:16,727 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:40:16,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 09:40:16,728 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:16,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:16,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1229089169, now seen corresponding path program 14 times [2020-10-12 09:40:16,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:16,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277190294] [2020-10-12 09:40:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:16,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:16,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:16,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:21,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:21,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 09:40:21,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:40:21,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:40:21,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:40:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:40:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:40:21,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:21,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:21,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:21,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:21,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:21,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:21,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:21,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:21,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:21,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:21,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:21,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:21,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:40:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:21,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:21,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:21,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:40:21,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:21,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 09:40:21,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:40:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:40:21,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:40:22,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 09:40:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:22,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:22,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:22,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:22,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:40:22,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:22,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 09:40:22,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:22,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:40:22,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:40:22,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:40:22,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 09:40:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:22,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:22,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:22,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:22,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:40:22,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:22,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 09:40:22,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:22,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:40:22,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:40:22,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-12 09:40:22,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277190294] [2020-10-12 09:40:22,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:22,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 09:40:22,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885238638] [2020-10-12 09:40:22,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 09:40:22,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:22,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 09:40:22,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:40:22,281 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 18 states. [2020-10-12 09:40:22,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:22,641 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-12 09:40:22,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 09:40:22,648 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-10-12 09:40:22,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:22,649 INFO L225 Difference]: With dead ends: 100 [2020-10-12 09:40:22,650 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 09:40:22,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 09:40:22,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 09:40:22,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-12 09:40:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 09:40:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-12 09:40:22,663 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 116 [2020-10-12 09:40:22,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:22,663 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-12 09:40:22,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 09:40:22,663 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-12 09:40:22,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 09:40:22,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:22,665 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:40:22,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 09:40:22,665 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:22,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:22,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1543732403, now seen corresponding path program 15 times [2020-10-12 09:40:22,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:22,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101621987] [2020-10-12 09:40:22,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:22,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:22,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:22,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:27,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:27,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 09:40:27,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:40:27,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:40:27,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:40:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:40:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:40:27,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:27,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:27,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:27,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:27,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:27,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:27,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:27,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:27,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:27,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:27,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:27,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:40:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:27,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:27,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:27,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:40:27,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:27,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 09:40:27,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:27,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:40:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:40:27,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:27,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 09:40:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:27,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:27,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:28,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:28,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:40:28,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:28,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-12 09:40:28,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:28,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:40:28,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:28,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:40:28,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:28,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 09:40:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:28,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:28,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:28,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:28,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:40:28,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 09:40:28,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:40:28,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:28,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:40:28,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-12 09:40:28,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101621987] [2020-10-12 09:40:28,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:28,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 09:40:28,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219601440] [2020-10-12 09:40:28,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 09:40:28,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:28,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 09:40:28,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 09:40:28,235 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 19 states. [2020-10-12 09:40:28,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:28,616 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-12 09:40:28,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 09:40:28,616 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-12 09:40:28,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:28,618 INFO L225 Difference]: With dead ends: 104 [2020-10-12 09:40:28,618 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 09:40:28,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 09:40:28,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 09:40:28,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-12 09:40:28,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 09:40:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-12 09:40:28,630 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 122 [2020-10-12 09:40:28,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:28,631 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-12 09:40:28,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 09:40:28,631 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-12 09:40:28,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 09:40:28,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:28,633 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:40:28,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 09:40:28,634 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:28,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:28,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1028723115, now seen corresponding path program 16 times [2020-10-12 09:40:28,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:28,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548613568] [2020-10-12 09:40:28,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:28,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:28,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:28,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:28,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:33,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:33,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 09:40:33,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:40:33,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:40:33,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:40:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-12 09:40:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:40:33,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:33,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:33,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:33,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:33,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:33,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:33,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:33,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:33,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:33,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:40:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:33,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:33,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:33,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:33,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:40:33,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:33,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 09:40:33,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:40:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:40:33,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:33,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 09:40:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:33,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:33,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:33,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:40:33,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:33,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 09:40:33,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:33,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:40:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:40:33,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:33,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 09:40:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:33,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:34,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:34,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:34,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:40:34,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 09:40:34,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:40:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:40:34,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-12 09:40:34,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548613568] [2020-10-12 09:40:34,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:34,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 09:40:34,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024667568] [2020-10-12 09:40:34,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 09:40:34,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:34,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 09:40:34,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 09:40:34,085 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 20 states. [2020-10-12 09:40:34,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:34,573 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-12 09:40:34,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 09:40:34,573 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2020-10-12 09:40:34,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:34,575 INFO L225 Difference]: With dead ends: 108 [2020-10-12 09:40:34,575 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 09:40:34,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 09:40:34,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 09:40:34,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-12 09:40:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 09:40:34,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-12 09:40:34,583 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 128 [2020-10-12 09:40:34,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:34,583 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-12 09:40:34,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 09:40:34,583 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-12 09:40:34,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 09:40:34,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:34,585 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:40:34,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 09:40:34,585 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:34,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:34,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1771807113, now seen corresponding path program 17 times [2020-10-12 09:40:34,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:34,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000630257] [2020-10-12 09:40:34,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:34,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:34,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:34,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:34,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:39,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:39,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 09:40:39,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:40:39,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:40:39,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:39,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:40:39,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 09:40:39,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:40:39,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:39,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:39,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:39,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:39,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:39,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:39,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:40:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:39,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:39,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:39,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:39,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:40:39,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:39,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 09:40:39,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:40:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:40:39,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:39,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 09:40:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:39,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:39,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:39,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:40:39,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:39,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 09:40:39,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:39,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:40:39,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:39,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:40:39,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:39,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 09:40:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:39,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:39,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:40,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:40,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:40:40,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 09:40:40,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:40:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:40:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-12 09:40:40,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000630257] [2020-10-12 09:40:40,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:40,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 09:40:40,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617414634] [2020-10-12 09:40:40,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 09:40:40,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:40,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 09:40:40,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:40:40,098 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 21 states. [2020-10-12 09:40:40,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:40,593 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-12 09:40:40,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 09:40:40,594 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 134 [2020-10-12 09:40:40,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:40,595 INFO L225 Difference]: With dead ends: 112 [2020-10-12 09:40:40,595 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 09:40:40,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 09:40:40,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 09:40:40,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-12 09:40:40,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 09:40:40,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-12 09:40:40,604 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 134 [2020-10-12 09:40:40,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:40,605 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-12 09:40:40,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 09:40:40,605 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-12 09:40:40,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 09:40:40,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:40,606 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:40:40,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 09:40:40,607 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:40,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:40,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1739287833, now seen corresponding path program 18 times [2020-10-12 09:40:40,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:40,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549270810] [2020-10-12 09:40:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:40,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:40,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:40,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:40,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:45,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:45,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 09:40:45,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:40:45,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:40:45,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:45,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:40:45,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:40:45,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:40:45,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:45,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:45,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:45,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:45,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:45,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:45,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:45,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:45,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:45,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:40:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:45,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:45,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:45,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:40:45,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:45,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 09:40:45,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:45,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:40:45,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:45,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:40:45,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:45,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 09:40:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:45,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:45,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:46,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:46,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:40:46,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:46,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 09:40:46,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:40:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:40:46,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:46,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 09:40:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:46,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:46,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:46,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:46,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:40:46,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:46,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 09:40:46,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:40:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:40:46,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:46,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-12 09:40:46,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549270810] [2020-10-12 09:40:46,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:46,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 09:40:46,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311354744] [2020-10-12 09:40:46,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 09:40:46,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:46,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 09:40:46,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 09:40:46,138 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 22 states. [2020-10-12 09:40:46,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:46,647 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-12 09:40:46,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 09:40:46,648 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-12 09:40:46,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:46,649 INFO L225 Difference]: With dead ends: 116 [2020-10-12 09:40:46,649 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 09:40:46,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 09:40:46,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 09:40:46,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-12 09:40:46,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 09:40:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-12 09:40:46,656 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 140 [2020-10-12 09:40:46,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:46,657 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-12 09:40:46,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 09:40:46,657 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-12 09:40:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 09:40:46,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:46,659 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:40:46,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 09:40:46,659 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:46,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:46,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1215543867, now seen corresponding path program 19 times [2020-10-12 09:40:46,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:46,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069129446] [2020-10-12 09:40:46,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:46,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:46,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:46,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:51,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:51,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 09:40:51,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:40:51,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:40:51,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:40:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:40:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:40:51,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:51,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:51,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:51,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:51,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:51,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:51,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:51,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:51,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:51,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:40:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:51,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:51,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:51,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:40:51,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 09:40:51,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:40:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:40:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:52,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 09:40:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:52,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:52,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:52,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:52,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:40:52,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:52,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 09:40:52,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:52,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:40:52,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:52,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:40:52,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:52,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 09:40:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:52,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:52,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:52,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:52,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:40:52,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:52,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 09:40:52,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:40:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:40:52,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-12 09:40:52,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069129446] [2020-10-12 09:40:52,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:52,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 09:40:52,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993862593] [2020-10-12 09:40:52,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 09:40:52,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:52,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 09:40:52,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:40:52,252 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 23 states. [2020-10-12 09:40:52,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:52,855 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-12 09:40:52,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 09:40:52,856 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-12 09:40:52,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:52,857 INFO L225 Difference]: With dead ends: 120 [2020-10-12 09:40:52,857 INFO L226 Difference]: Without dead ends: 66 [2020-10-12 09:40:52,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 09:40:52,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-12 09:40:52,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-12 09:40:52,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 09:40:52,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-12 09:40:52,879 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 146 [2020-10-12 09:40:52,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:52,879 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-12 09:40:52,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 09:40:52,880 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-12 09:40:52,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 09:40:52,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:52,883 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:40:52,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 09:40:52,883 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:52,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:52,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1444210141, now seen corresponding path program 20 times [2020-10-12 09:40:52,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:52,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442326288] [2020-10-12 09:40:52,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:52,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:57,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:57,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 09:40:57,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:40:57,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:40:57,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:40:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:40:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:40:57,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:57,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:57,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:57,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:57,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:57,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:57,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:57,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:57,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:57,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:57,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:57,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:40:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:57,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:57,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:57,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:40:57,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:57,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 09:40:57,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:57,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:40:57,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:57,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:40:57,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:58,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 09:40:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:58,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:58,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:58,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:58,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:40:58,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:58,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 09:40:58,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:58,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:40:58,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:40:58,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:58,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 09:40:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:58,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:58,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:40:58,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 09:40:58,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:40:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:40:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-12 09:40:58,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442326288] [2020-10-12 09:40:58,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:58,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 09:40:58,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72989662] [2020-10-12 09:40:58,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 09:40:58,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:58,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 09:40:58,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 09:40:58,548 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 24 states. [2020-10-12 09:40:59,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:59,230 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-12 09:40:59,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 09:40:59,231 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 152 [2020-10-12 09:40:59,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:59,232 INFO L225 Difference]: With dead ends: 124 [2020-10-12 09:40:59,232 INFO L226 Difference]: Without dead ends: 68 [2020-10-12 09:40:59,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 09:40:59,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-12 09:40:59,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-12 09:40:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-12 09:40:59,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-12 09:40:59,251 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 152 [2020-10-12 09:40:59,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:59,252 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-12 09:40:59,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 09:40:59,252 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-12 09:40:59,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 09:40:59,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:59,254 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:40:59,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 09:40:59,255 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:59,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:59,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1018261505, now seen corresponding path program 21 times [2020-10-12 09:40:59,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:59,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803734529] [2020-10-12 09:40:59,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:59,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:59,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:59,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:59,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:04,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:04,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 09:41:04,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:41:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:41:04,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:41:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:41:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:41:04,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:04,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:41:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:04,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:04,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:04,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:41:04,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:04,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:41:04,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:04,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:41:04,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:41:04,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:41:04,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:04,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:41:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:04,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:04,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:04,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:41:04,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:04,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 09:41:04,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:04,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:41:04,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:04,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:41:04,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:04,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 09:41:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:04,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:04,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:04,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:04,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:41:04,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:04,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-12 09:41:04,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:04,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:41:04,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:04,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:41:04,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:04,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 09:41:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:04,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:04,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:04,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:41:04,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:04,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-12 09:41:04,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:41:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:41:04,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:04,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-12 09:41:04,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803734529] [2020-10-12 09:41:04,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:41:04,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 09:41:04,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414371700] [2020-10-12 09:41:04,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 09:41:04,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:41:04,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 09:41:04,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:41:04,992 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 25 states. [2020-10-12 09:41:05,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:41:05,658 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-12 09:41:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 09:41:05,659 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 158 [2020-10-12 09:41:05,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:41:05,660 INFO L225 Difference]: With dead ends: 128 [2020-10-12 09:41:05,660 INFO L226 Difference]: Without dead ends: 70 [2020-10-12 09:41:05,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 09:41:05,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-12 09:41:05,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-12 09:41:05,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 09:41:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-12 09:41:05,666 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 158 [2020-10-12 09:41:05,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:41:05,666 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-12 09:41:05,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 09:41:05,666 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-12 09:41:05,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 09:41:05,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:41:05,669 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:41:05,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 09:41:05,669 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:41:05,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:41:05,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1648908449, now seen corresponding path program 22 times [2020-10-12 09:41:05,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:41:05,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106255150] [2020-10-12 09:41:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:41:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:05,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:05,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:05,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:05,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:10,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:10,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 09:41:10,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:41:10,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:41:10,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:41:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:41:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:41:10,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:10,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:41:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:10,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:10,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:10,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:41:10,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:10,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:41:10,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:41:10,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:41:10,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:41:10,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:10,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:41:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:10,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:10,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:10,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:41:10,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:10,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 09:41:10,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:10,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:41:10,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:10,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:41:10,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:11,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 09:41:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:11,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:11,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:11,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:11,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:41:11,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:11,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 09:41:11,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:41:11,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:11,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:41:11,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:11,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 09:41:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:11,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:11,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:11,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:11,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:41:11,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:11,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-12 09:41:11,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:11,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:41:11,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:11,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:41:11,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:11,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-12 09:41:11,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106255150] [2020-10-12 09:41:11,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:41:11,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 09:41:11,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837121646] [2020-10-12 09:41:11,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 09:41:11,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:41:11,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 09:41:11,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-12 09:41:11,419 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 26 states. [2020-10-12 09:41:12,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:41:12,162 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-12 09:41:12,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 09:41:12,163 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 164 [2020-10-12 09:41:12,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:41:12,164 INFO L225 Difference]: With dead ends: 132 [2020-10-12 09:41:12,164 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 09:41:12,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 09:41:12,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 09:41:12,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-12 09:41:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 09:41:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-12 09:41:12,174 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 164 [2020-10-12 09:41:12,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:41:12,175 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-12 09:41:12,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 09:41:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-12 09:41:12,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 09:41:12,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:41:12,178 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:41:12,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 09:41:12,182 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:41:12,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:41:12,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1366171709, now seen corresponding path program 23 times [2020-10-12 09:41:12,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:41:12,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056197500] [2020-10-12 09:41:12,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:41:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:12,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:12,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:12,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:12,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:17,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:17,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-12 09:41:17,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:41:17,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:41:17,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:41:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:41:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:41:17,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:17,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:41:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:17,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:17,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:17,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:41:17,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:17,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:41:17,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:17,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:41:17,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:41:17,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:41:17,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:17,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:41:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:17,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:17,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:17,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:41:17,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:17,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 09:41:17,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:17,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:41:17,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:17,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:41:17,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:17,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 09:41:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:17,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:17,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:17,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:17,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:41:17,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:17,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-12 09:41:17,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:17,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:41:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:41:17,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:17,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-12 09:41:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:17,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:17,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:18,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:18,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:41:18,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-12 09:41:18,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:41:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:41:18,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:41:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-12 09:41:18,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056197500] [2020-10-12 09:41:18,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:41:18,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 09:41:18,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056502111] [2020-10-12 09:41:18,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 09:41:18,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:41:18,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 09:41:18,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:41:18,103 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 27 states. [2020-10-12 09:41:18,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:41:18,844 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-12 09:41:18,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 09:41:18,844 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 170 [2020-10-12 09:41:18,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:41:18,845 INFO L225 Difference]: With dead ends: 136 [2020-10-12 09:41:18,845 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 09:41:18,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 09:41:18,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 09:41:18,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-12 09:41:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 09:41:18,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-12 09:41:18,856 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 170 [2020-10-12 09:41:18,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:41:18,857 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-12 09:41:18,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 09:41:18,857 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-12 09:41:18,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 09:41:18,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:41:18,859 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:41:18,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 09:41:18,859 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:41:18,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:41:18,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1461896549, now seen corresponding path program 24 times [2020-10-12 09:41:18,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:41:18,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688176124] [2020-10-12 09:41:18,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:41:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:18,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:18,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:18,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:23,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:23,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 09:41:23,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:41:23,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:41:23,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:41:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:41:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:41:23,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:23,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:41:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:23,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:23,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:23,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:41:23,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:23,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:41:23,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:23,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:41:23,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:41:23,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:41:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:23,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:41:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:23,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:24,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:24,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:41:24,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:24,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-12 09:41:24,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:24,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:41:24,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:24,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:41:24,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:24,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 09:41:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:24,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:24,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:24,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:24,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:41:24,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:24,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 09:41:24,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:24,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:41:24,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:24,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:41:24,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:24,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 09:41:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:24,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:24,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:24,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:24,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:41:24,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:24,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 09:41:24,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:41:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:41:24,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:24,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-12 09:41:24,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688176124] [2020-10-12 09:41:24,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:41:24,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 09:41:24,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659480576] [2020-10-12 09:41:24,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 09:41:24,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:41:24,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 09:41:24,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-12 09:41:24,773 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 28 states. [2020-10-12 09:41:25,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:41:25,559 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-12 09:41:25,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 09:41:25,559 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 176 [2020-10-12 09:41:25,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:41:25,561 INFO L225 Difference]: With dead ends: 140 [2020-10-12 09:41:25,561 INFO L226 Difference]: Without dead ends: 76 [2020-10-12 09:41:25,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 09:41:25,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-12 09:41:25,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-12 09:41:25,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-12 09:41:25,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-12 09:41:25,568 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 176 [2020-10-12 09:41:25,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:41:25,569 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-12 09:41:25,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 09:41:25,569 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-12 09:41:25,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-12 09:41:25,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:41:25,571 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:41:25,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 09:41:25,571 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:41:25,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:41:25,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1213901191, now seen corresponding path program 25 times [2020-10-12 09:41:25,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:41:25,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238504202] [2020-10-12 09:41:25,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:41:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:25,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:25,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:25,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:30,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:30,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 09:41:30,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:41:30,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:41:30,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:41:30,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 09:41:30,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:41:30,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:30,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:41:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:30,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:30,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:30,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:41:30,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:30,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:41:30,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:30,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:41:30,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:41:30,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:41:30,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:30,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:41:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:30,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:30,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:30,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:30,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:41:30,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:30,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-12 09:41:30,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:30,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:41:30,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:30,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:41:30,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:31,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 09:41:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:31,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:31,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:31,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:41:31,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:31,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 09:41:31,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:31,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:41:31,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:31,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:41:31,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:31,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 09:41:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:31,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:31,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:31,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:31,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:41:31,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:31,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-12 09:41:31,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:31,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:41:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:41:31,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-12 09:41:31,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238504202] [2020-10-12 09:41:31,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:41:31,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 09:41:31,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204456096] [2020-10-12 09:41:31,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 09:41:31,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:41:31,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 09:41:31,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:41:31,485 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 29 states. [2020-10-12 09:41:32,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:41:32,348 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-12 09:41:32,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 09:41:32,349 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 182 [2020-10-12 09:41:32,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:41:32,350 INFO L225 Difference]: With dead ends: 144 [2020-10-12 09:41:32,350 INFO L226 Difference]: Without dead ends: 78 [2020-10-12 09:41:32,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-12 09:41:32,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-12 09:41:32,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-12 09:41:32,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 09:41:32,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-12 09:41:32,357 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 182 [2020-10-12 09:41:32,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:41:32,358 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-12 09:41:32,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 09:41:32,358 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-12 09:41:32,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-12 09:41:32,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:41:32,359 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:41:32,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 09:41:32,359 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:41:32,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:41:32,360 INFO L82 PathProgramCache]: Analyzing trace with hash -906046505, now seen corresponding path program 26 times [2020-10-12 09:41:32,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:41:32,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065418437] [2020-10-12 09:41:32,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:41:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:32,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:32,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:32,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:32,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:37,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:37,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-12 09:41:37,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:41:37,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:41:37,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:41:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:41:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:41:37,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:37,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:41:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:37,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:37,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:37,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:41:37,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:37,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:41:37,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:41:37,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:41:37,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:41:37,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:37,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:41:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:37,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:37,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:37,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:41:37,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:37,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 09:41:37,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:41:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:41:37,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:37,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 09:41:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:37,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:38,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:38,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:38,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:41:38,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:38,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 09:41:38,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:41:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:41:38,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:38,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 09:41:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:38,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:38,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:38,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:38,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:41:38,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:38,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-12 09:41:38,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:38,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:41:38,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:38,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:41:38,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:38,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-12 09:41:38,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065418437] [2020-10-12 09:41:38,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:41:38,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 09:41:38,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117838085] [2020-10-12 09:41:38,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 09:41:38,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:41:38,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 09:41:38,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-12 09:41:38,315 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 30 states. [2020-10-12 09:41:39,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:41:39,269 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-12 09:41:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 09:41:39,269 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-10-12 09:41:39,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:41:39,270 INFO L225 Difference]: With dead ends: 148 [2020-10-12 09:41:39,270 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 09:41:39,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 09:41:39,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 09:41:39,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-12 09:41:39,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 09:41:39,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-12 09:41:39,279 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 188 [2020-10-12 09:41:39,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:41:39,279 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-12 09:41:39,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 09:41:39,279 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-12 09:41:39,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 09:41:39,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:41:39,281 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:41:39,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 09:41:39,281 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:41:39,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:41:39,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1522143925, now seen corresponding path program 27 times [2020-10-12 09:41:39,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:41:39,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393035710] [2020-10-12 09:41:39,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:41:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:39,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:39,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:39,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:39,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:44,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:44,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-12 09:41:44,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:41:44,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:41:44,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:41:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 09:41:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:41:44,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:44,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:41:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:44,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:44,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:44,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:41:44,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:44,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:41:44,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:41:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:41:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:41:44,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:44,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:41:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:44,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:44,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:44,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:41:44,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:44,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-12 09:41:44,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:41:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:41:44,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:44,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 09:41:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:44,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:45,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:45,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:41:45,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:45,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-12 09:41:45,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:41:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:41:45,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:45,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 09:41:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:45,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:45,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:45,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:45,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:41:45,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:45,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 09:41:45,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:45,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:41:45,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:45,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:41:45,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-12 09:41:45,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393035710] [2020-10-12 09:41:45,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:41:45,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 09:41:45,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522192666] [2020-10-12 09:41:45,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 09:41:45,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:41:45,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 09:41:45,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-12 09:41:45,309 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 31 states. [2020-10-12 09:41:46,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:41:46,294 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-12 09:41:46,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 09:41:46,295 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 194 [2020-10-12 09:41:46,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:41:46,297 INFO L225 Difference]: With dead ends: 152 [2020-10-12 09:41:46,297 INFO L226 Difference]: Without dead ends: 82 [2020-10-12 09:41:46,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-12 09:41:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-12 09:41:46,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-12 09:41:46,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 09:41:46,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-12 09:41:46,305 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 194 [2020-10-12 09:41:46,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:41:46,305 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-12 09:41:46,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 09:41:46,305 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-12 09:41:46,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-12 09:41:46,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:41:46,307 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:41:46,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 09:41:46,307 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:41:46,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:41:46,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1992330477, now seen corresponding path program 28 times [2020-10-12 09:41:46,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:41:46,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376154045] [2020-10-12 09:41:46,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:41:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:46,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:46,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:46,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:46,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:51,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:51,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-12 09:41:51,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:41:51,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:41:51,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:51,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:41:51,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-12 09:41:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:41:51,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:51,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:41:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:51,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:51,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:51,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:41:51,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:51,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:41:51,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:51,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:41:51,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:41:51,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:41:51,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:51,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:41:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:51,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:51,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:51,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:51,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:41:51,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:51,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 09:41:51,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:41:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:41:51,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:52,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 09:41:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:52,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:52,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:52,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:41:52,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:52,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 09:41:52,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:52,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:41:52,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:52,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:41:52,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:52,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-12 09:41:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:52,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:52,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:52,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:52,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:41:52,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:52,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 09:41:52,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:52,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:41:52,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:52,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:41:52,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-12 09:41:52,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376154045] [2020-10-12 09:41:52,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:41:52,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 09:41:52,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081323492] [2020-10-12 09:41:52,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 09:41:52,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:41:52,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 09:41:52,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-12 09:41:52,357 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 32 states. [2020-10-12 09:41:53,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:41:53,398 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-12 09:41:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 09:41:53,399 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 200 [2020-10-12 09:41:53,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:41:53,400 INFO L225 Difference]: With dead ends: 156 [2020-10-12 09:41:53,400 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 09:41:53,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-12 09:41:53,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 09:41:53,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-12 09:41:53,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-12 09:41:53,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-12 09:41:53,407 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 200 [2020-10-12 09:41:53,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:41:53,408 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-12 09:41:53,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 09:41:53,408 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-12 09:41:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-12 09:41:53,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:41:53,410 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:41:53,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 09:41:53,410 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:41:53,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:41:53,411 INFO L82 PathProgramCache]: Analyzing trace with hash 261051633, now seen corresponding path program 29 times [2020-10-12 09:41:53,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:41:53,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499823992] [2020-10-12 09:41:53,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:41:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:53,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:53,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:53,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:53,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:58,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:58,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-12 09:41:58,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:41:58,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:41:58,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:41:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-12 09:41:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:41:58,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:58,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:41:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:58,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:58,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:58,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:41:58,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:58,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:41:58,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:41:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:41:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:41:58,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:58,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:41:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:58,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:58,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:58,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:41:58,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:58,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-12 09:41:58,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:41:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:41:58,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:59,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 09:41:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:59,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:59,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:59,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:41:59,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:59,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-12 09:41:59,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:41:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:41:59,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:59,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 09:41:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:59,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:59,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:59,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:59,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:41:59,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:41:59,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 09:41:59,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:59,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:41:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:41:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:41:59,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:59,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-12 09:41:59,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499823992] [2020-10-12 09:41:59,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:41:59,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 09:41:59,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884033910] [2020-10-12 09:41:59,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 09:41:59,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:41:59,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 09:41:59,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 09:41:59,497 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 33 states. [2020-10-12 09:42:00,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:42:00,543 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-12 09:42:00,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 09:42:00,544 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2020-10-12 09:42:00,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:42:00,545 INFO L225 Difference]: With dead ends: 160 [2020-10-12 09:42:00,545 INFO L226 Difference]: Without dead ends: 86 [2020-10-12 09:42:00,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-12 09:42:00,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-12 09:42:00,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-12 09:42:00,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-12 09:42:00,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-12 09:42:00,553 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 206 [2020-10-12 09:42:00,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:42:00,553 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-12 09:42:00,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 09:42:00,553 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-12 09:42:00,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 09:42:00,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:42:00,554 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:42:00,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 09:42:00,554 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:42:00,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:42:00,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1203627953, now seen corresponding path program 30 times [2020-10-12 09:42:00,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:42:00,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612266813] [2020-10-12 09:42:00,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:42:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:00,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:00,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:00,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:00,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:05,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:05,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 09:42:05,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:42:05,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:42:05,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:42:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:42:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:42:05,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:05,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:42:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:05,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:05,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:05,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:42:05,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:42:05,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:42:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:42:05,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:05,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:42:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:05,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:05,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:05,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:42:05,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:05,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 09:42:05,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:05,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:42:05,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:05,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:42:05,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:06,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 09:42:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:06,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:06,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:06,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:06,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:42:06,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:42:06,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-12 09:42:06,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:06,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:42:06,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:06,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:42:06,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:06,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 09:42:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:06,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:06,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:06,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:06,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:42:06,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:42:06,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-12 09:42:06,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:06,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:42:06,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:06,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:42:06,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:06,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-12 09:42:06,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612266813] [2020-10-12 09:42:06,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:42:06,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 09:42:06,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790639457] [2020-10-12 09:42:06,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 09:42:06,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:42:06,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 09:42:06,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 09:42:06,907 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 34 states. [2020-10-12 09:42:08,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:42:08,066 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-12 09:42:08,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 09:42:08,067 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 212 [2020-10-12 09:42:08,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:42:08,069 INFO L225 Difference]: With dead ends: 164 [2020-10-12 09:42:08,069 INFO L226 Difference]: Without dead ends: 88 [2020-10-12 09:42:08,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-12 09:42:08,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-12 09:42:08,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-12 09:42:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-12 09:42:08,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-12 09:42:08,079 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 212 [2020-10-12 09:42:08,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:42:08,079 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-12 09:42:08,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 09:42:08,080 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-12 09:42:08,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-12 09:42:08,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:42:08,081 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:42:08,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 09:42:08,082 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:42:08,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:42:08,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1418206509, now seen corresponding path program 31 times [2020-10-12 09:42:08,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:42:08,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314105382] [2020-10-12 09:42:08,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:42:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:08,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:08,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:08,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:08,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:13,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:13,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-12 09:42:13,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:42:13,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:42:13,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:13,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:42:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:42:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:42:13,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:13,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:42:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:13,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:13,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:42:13,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:13,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:42:13,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:13,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:42:13,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:42:13,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:13,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:42:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:13,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:13,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:13,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:42:13,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:13,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-12 09:42:13,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:13,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:42:13,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:13,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:42:13,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:14,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-12 09:42:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:14,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:14,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:14,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:42:14,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:42:14,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-12 09:42:14,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:42:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:42:14,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:14,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-12 09:42:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:14,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:14,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:14,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:14,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:42:14,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:42:14,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-12 09:42:14,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:14,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:42:14,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:14,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:42:14,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2883 proven. 5766 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-12 09:42:14,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314105382] [2020-10-12 09:42:14,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:42:14,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-12 09:42:14,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195746792] [2020-10-12 09:42:14,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-12 09:42:14,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:42:14,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-12 09:42:14,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 09:42:14,640 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 35 states. [2020-10-12 09:42:15,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:42:15,857 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-12 09:42:15,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 09:42:15,858 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 218 [2020-10-12 09:42:15,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:42:15,859 INFO L225 Difference]: With dead ends: 168 [2020-10-12 09:42:15,859 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 09:42:15,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2020-10-12 09:42:15,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 09:42:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-12 09:42:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-12 09:42:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-12 09:42:15,867 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 218 [2020-10-12 09:42:15,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:42:15,868 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-12 09:42:15,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-12 09:42:15,868 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-12 09:42:15,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-12 09:42:15,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:42:15,870 INFO L422 BasicCegarLoop]: trace histogram [96, 96, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:42:15,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 09:42:15,871 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:42:15,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:42:15,871 INFO L82 PathProgramCache]: Analyzing trace with hash 841597835, now seen corresponding path program 32 times [2020-10-12 09:42:15,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:42:15,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980853646] [2020-10-12 09:42:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:42:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:15,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:15,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:16,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:20,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:20,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-12 09:42:20,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:42:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 09:42:20,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:42:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:42:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:42:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:20,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:42:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:20,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:20,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:20,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:42:20,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:20,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:42:20,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:42:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:42:20,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:20,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:42:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:20,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:21,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:21,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:42:21,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:21,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-12 09:42:21,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:42:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:42:21,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:21,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 09:42:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:21,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:21,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:22,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:22,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:42:22,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:42:22,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-12 09:42:22,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:22,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:42:22,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:22,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:42:22,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:22,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-12 09:42:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:22,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:22,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:22,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:22,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:42:22,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:42:22,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-12 09:42:22,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:22,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:42:22,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:22,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:42:22,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9423 backedges. 3072 proven. 6144 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-12 09:42:22,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980853646] [2020-10-12 09:42:22,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:42:22,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-12 09:42:22,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641857676] [2020-10-12 09:42:22,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-12 09:42:22,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:42:22,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-12 09:42:22,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 09:42:22,481 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 36 states. [2020-10-12 09:42:23,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:42:23,821 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2020-10-12 09:42:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 09:42:23,821 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 224 [2020-10-12 09:42:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:42:23,822 INFO L225 Difference]: With dead ends: 172 [2020-10-12 09:42:23,823 INFO L226 Difference]: Without dead ends: 92 [2020-10-12 09:42:23,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 09:42:23,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-12 09:42:23,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-12 09:42:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 09:42:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-12 09:42:23,831 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 224 [2020-10-12 09:42:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:42:23,832 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-12 09:42:23,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-12 09:42:23,832 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-12 09:42:23,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-12 09:42:23,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:42:23,835 INFO L422 BasicCegarLoop]: trace histogram [99, 99, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:42:23,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 09:42:23,835 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:42:23,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:42:23,836 INFO L82 PathProgramCache]: Analyzing trace with hash 294087529, now seen corresponding path program 33 times [2020-10-12 09:42:23,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:42:23,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882695528] [2020-10-12 09:42:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:42:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:23,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:23,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:23,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:24,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:28,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:28,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-12 09:42:28,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:42:28,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 09:42:28,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:42:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 09:42:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:42:28,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:28,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:42:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:28,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:28,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:28,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:42:28,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:28,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:42:28,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:28,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:42:28,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:28,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:42:28,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:28,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:42:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:28,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:28,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:29,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:29,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:42:29,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:42:29,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-12 09:42:29,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:29,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:42:29,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:29,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:42:29,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:29,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 09:42:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:29,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:30,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:30,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:42:30,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:30,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-12 09:42:30,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:42:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:42:30,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:30,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 09:42:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:30,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:30,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:30,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:30,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:42:30,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:42:30,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-12 09:42:30,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:42:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:42:30,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 10014 backedges. 3267 proven. 6534 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-12 09:42:30,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882695528] [2020-10-12 09:42:30,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:42:30,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-12 09:42:30,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950528394] [2020-10-12 09:42:30,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-12 09:42:30,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:42:30,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-12 09:42:30,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 09:42:30,491 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 37 states. [2020-10-12 09:42:31,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:42:31,865 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-10-12 09:42:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 09:42:31,866 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 230 [2020-10-12 09:42:31,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:42:31,867 INFO L225 Difference]: With dead ends: 176 [2020-10-12 09:42:31,867 INFO L226 Difference]: Without dead ends: 94 [2020-10-12 09:42:31,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2020-10-12 09:42:31,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-12 09:42:31,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-12 09:42:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-12 09:42:31,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-12 09:42:31,876 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 230 [2020-10-12 09:42:31,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:42:31,877 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-12 09:42:31,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-12 09:42:31,877 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-12 09:42:31,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-12 09:42:31,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:42:31,878 INFO L422 BasicCegarLoop]: trace histogram [102, 102, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:42:31,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 09:42:31,879 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:42:31,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:42:31,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1684441913, now seen corresponding path program 34 times [2020-10-12 09:42:31,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:42:31,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180299799] [2020-10-12 09:42:31,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:42:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:31,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:31,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:31,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:32,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:36,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:36,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-12 09:42:36,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:42:36,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 09:42:36,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:42:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:42:36,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:42:36,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:36,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:42:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:36,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:36,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:36,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:42:36,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:36,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:42:36,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:36,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:42:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:42:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:36,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:42:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:36,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:37,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:37,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 09:42:37,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-12 09:42:37,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:42:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:42:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:38,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 09:42:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:38,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:38,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:38,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:38,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 09:42:38,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:42:38,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-12 09:42:38,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:38,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:42:38,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:38,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:42:38,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:38,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-12 09:42:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:38,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:38,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:38,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:38,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 09:42:38,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:42:38,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-12 09:42:38,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:42:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:42:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 10623 backedges. 3468 proven. 6936 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-12 09:42:38,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180299799] [2020-10-12 09:42:38,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:42:38,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-12 09:42:38,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189236967] [2020-10-12 09:42:38,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-12 09:42:38,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:42:38,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-12 09:42:38,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 09:42:38,754 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 38 states. [2020-10-12 09:42:40,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:42:40,193 INFO L93 Difference]: Finished difference Result 180 states and 190 transitions. [2020-10-12 09:42:40,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 09:42:40,194 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 236 [2020-10-12 09:42:40,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:42:40,195 INFO L225 Difference]: With dead ends: 180 [2020-10-12 09:42:40,195 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 09:42:40,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2020-10-12 09:42:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 09:42:40,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-12 09:42:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-12 09:42:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-12 09:42:40,203 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 236 [2020-10-12 09:42:40,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:42:40,203 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-12 09:42:40,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-12 09:42:40,204 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-12 09:42:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-12 09:42:40,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:42:40,205 INFO L422 BasicCegarLoop]: trace histogram [105, 105, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:42:40,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 09:42:40,206 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:42:40,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:42:40,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1475362725, now seen corresponding path program 35 times [2020-10-12 09:42:40,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:42:40,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831387701] [2020-10-12 09:42:40,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:42:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:40,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:40,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:40,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:40,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:45,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:45,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-12 09:42:45,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:42:45,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 09:42:45,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:45,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:42:45,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:42:45,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:42:45,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:45,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:42:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:45,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:45,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:45,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:42:45,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:45,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:42:45,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:42:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:42:45,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:45,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:42:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:45,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:45,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:45,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:42:45,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:45,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-12 09:42:45,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:45,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:42:45,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:45,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:42:45,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:46,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 09:42:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:46,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:46,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:46,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:42:46,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:42:46,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-10-12 09:42:46,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:46,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:42:46,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:46,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:42:46,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:46,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-12 09:42:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:46,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:47,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:47,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:42:47,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:42:47,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-12 09:42:47,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:42:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:42:47,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:47,276 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 3675 proven. 7350 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-12 09:42:47,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831387701] [2020-10-12 09:42:47,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:42:47,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-12 09:42:47,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396372851] [2020-10-12 09:42:47,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-12 09:42:47,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:42:47,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-12 09:42:47,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 09:42:47,280 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 39 states. [2020-10-12 09:42:48,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:42:48,832 INFO L93 Difference]: Finished difference Result 184 states and 194 transitions. [2020-10-12 09:42:48,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 09:42:48,832 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 242 [2020-10-12 09:42:48,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:42:48,834 INFO L225 Difference]: With dead ends: 184 [2020-10-12 09:42:48,835 INFO L226 Difference]: Without dead ends: 98 [2020-10-12 09:42:48,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2020-10-12 09:42:48,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-12 09:42:48,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-12 09:42:48,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-12 09:42:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-12 09:42:48,842 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 242 [2020-10-12 09:42:48,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:42:48,844 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-12 09:42:48,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-12 09:42:48,844 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-12 09:42:48,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-12 09:42:48,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:42:48,847 INFO L422 BasicCegarLoop]: trace histogram [108, 108, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:42:48,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 09:42:48,847 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:42:48,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:42:48,847 INFO L82 PathProgramCache]: Analyzing trace with hash 582233091, now seen corresponding path program 36 times [2020-10-12 09:42:48,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:42:48,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823818749] [2020-10-12 09:42:48,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:42:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:48,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:48,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:48,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:48,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:53,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:53,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 09:42:53,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:42:53,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:42:53,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:42:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 09:42:53,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:42:53,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:53,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:42:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:53,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:53,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:53,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:42:53,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:53,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:42:53,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:42:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:42:53,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:53,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:42:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:53,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:53,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:54,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:54,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 09:42:54,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:42:54,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-12 09:42:54,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:42:54,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:54,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:42:54,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:55,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 09:42:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:55,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:55,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:55,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 09:42:55,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:55,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-12 09:42:55,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:42:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:42:55,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:55,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-12 09:42:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:55,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:55,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:56,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:56,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 09:42:56,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:42:56,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-10-12 09:42:56,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:56,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:42:56,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:56,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:42:56,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 11895 backedges. 3888 proven. 7776 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-12 09:42:56,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823818749] [2020-10-12 09:42:56,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:42:56,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-12 09:42:56,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515380361] [2020-10-12 09:42:56,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-12 09:42:56,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:42:56,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-12 09:42:56,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 09:42:56,182 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 40 states. [2020-10-12 09:42:57,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:42:57,847 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-10-12 09:42:57,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-12 09:42:57,847 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 248 [2020-10-12 09:42:57,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:42:57,849 INFO L225 Difference]: With dead ends: 188 [2020-10-12 09:42:57,849 INFO L226 Difference]: Without dead ends: 100 [2020-10-12 09:42:57,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2020-10-12 09:42:57,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-12 09:42:57,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-12 09:42:57,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-12 09:42:57,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-12 09:42:57,857 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 248 [2020-10-12 09:42:57,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:42:57,857 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-12 09:42:57,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-12 09:42:57,857 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-12 09:42:57,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-12 09:42:57,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:42:57,859 INFO L422 BasicCegarLoop]: trace histogram [111, 111, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:42:57,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 09:42:57,860 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:42:57,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:42:57,860 INFO L82 PathProgramCache]: Analyzing trace with hash 581278177, now seen corresponding path program 37 times [2020-10-12 09:42:57,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:42:57,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939911339] [2020-10-12 09:42:57,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:42:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:57,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:57,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:57,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:57,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:02,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:02,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-12 09:43:02,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:43:02,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:43:02,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:43:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:43:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:43:02,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:02,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:43:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:02,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:02,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:02,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:43:02,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:43:02,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:43:02,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:02,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:43:02,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:43:02,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:43:02,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:02,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:43:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:02,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:03,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:03,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 09:43:03,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:43:03,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-12 09:43:03,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:43:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:43:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:43:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:04,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-12 09:43:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:04,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:04,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:04,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 09:43:04,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:43:04,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-12 09:43:04,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:04,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:43:04,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:43:04,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:43:04,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:04,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-12 09:43:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:04,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:04,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:04,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:04,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 09:43:04,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:43:04,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-12 09:43:04,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:04,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:43:04,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:43:04,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:43:04,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 12558 backedges. 4107 proven. 8214 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-10-12 09:43:04,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939911339] [2020-10-12 09:43:04,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:43:04,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-12 09:43:04,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122441145] [2020-10-12 09:43:04,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-12 09:43:04,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:43:04,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-12 09:43:04,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 09:43:04,809 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 41 states.