/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=NARROWEST --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/xor1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 04:34:03,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 04:34:03,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 04:34:03,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 04:34:03,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 04:34:03,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 04:34:03,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 04:34:03,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 04:34:03,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 04:34:03,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 04:34:03,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 04:34:03,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 04:34:03,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 04:34:03,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 04:34:03,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 04:34:03,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 04:34:03,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 04:34:03,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 04:34:03,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 04:34:03,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 04:34:03,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 04:34:03,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 04:34:03,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 04:34:03,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 04:34:03,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 04:34:03,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 04:34:03,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 04:34:03,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 04:34:03,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 04:34:03,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 04:34:03,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 04:34:03,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 04:34:03,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 04:34:03,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 04:34:03,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 04:34:03,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 04:34:03,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 04:34:03,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 04:34:03,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 04:34:03,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 04:34:03,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 04:34:03,522 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 [2020-10-13 04:34:03,544 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 04:34:03,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 04:34:03,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 04:34:03,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 04:34:03,546 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 04:34:03,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 04:34:03,547 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 04:34:03,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 04:34:03,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 04:34:03,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 04:34:03,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 04:34:03,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 04:34:03,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 04:34:03,548 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 04:34:03,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 04:34:03,548 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 04:34:03,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 04:34:03,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 04:34:03,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 04:34:03,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 04:34:03,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 04:34:03,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 04:34:03,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 04:34:03,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 04:34:03,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 04:34:03,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 04:34:03,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 04:34:03,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 04:34:03,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 04:34:03,551 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 04:34:03,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 04:34:03,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 04:34:03,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 04:34:03,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 04:34:03,859 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 04:34:03,859 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor1.i [2020-10-13 04:34:03,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/466fe7a28/cd40a9449cac4513b253cc48a8f99f9e/FLAG7a3e2f897 [2020-10-13 04:34:04,396 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 04:34:04,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/xor1.i [2020-10-13 04:34:04,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/466fe7a28/cd40a9449cac4513b253cc48a8f99f9e/FLAG7a3e2f897 [2020-10-13 04:34:04,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/466fe7a28/cd40a9449cac4513b253cc48a8f99f9e [2020-10-13 04:34:04,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 04:34:04,772 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 04:34:04,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 04:34:04,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 04:34:04,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 04:34:04,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:34:04" (1/1) ... [2020-10-13 04:34:04,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c46e88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:04, skipping insertion in model container [2020-10-13 04:34:04,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:34:04" (1/1) ... [2020-10-13 04:34:04,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 04:34:04,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 04:34:05,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:34:05,015 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 04:34:05,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:34:05,054 INFO L208 MainTranslator]: Completed translation [2020-10-13 04:34:05,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:05 WrapperNode [2020-10-13 04:34:05,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 04:34:05,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 04:34:05,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 04:34:05,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 04:34:05,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:05" (1/1) ... [2020-10-13 04:34:05,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:05" (1/1) ... [2020-10-13 04:34:05,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:05" (1/1) ... [2020-10-13 04:34:05,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:05" (1/1) ... [2020-10-13 04:34:05,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:05" (1/1) ... [2020-10-13 04:34:05,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:05" (1/1) ... [2020-10-13 04:34:05,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:05" (1/1) ... [2020-10-13 04:34:05,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 04:34:05,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 04:34:05,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 04:34:05,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 04:34:05,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:05" (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 [2020-10-13 04:34:05,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 04:34:05,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 04:34:05,248 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2020-10-13 04:34:05,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 04:34:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 04:34:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 04:34:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2020-10-13 04:34:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 04:34:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 04:34:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 04:34:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 04:34:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 04:34:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 04:34:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 04:34:05,503 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 04:34:05,503 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 04:34:05,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:34:05 BoogieIcfgContainer [2020-10-13 04:34:05,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 04:34:05,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 04:34:05,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 04:34:05,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 04:34:05,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:34:04" (1/3) ... [2020-10-13 04:34:05,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db67f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:34:05, skipping insertion in model container [2020-10-13 04:34:05,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:05" (2/3) ... [2020-10-13 04:34:05,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db67f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:34:05, skipping insertion in model container [2020-10-13 04:34:05,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:34:05" (3/3) ... [2020-10-13 04:34:05,516 INFO L109 eAbstractionObserver]: Analyzing ICFG xor1.i [2020-10-13 04:34:05,527 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 04:34:05,535 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 04:34:05,551 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 04:34:05,588 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 04:34:05,589 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 04:34:05,589 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 04:34:05,589 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 04:34:05,589 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 04:34:05,590 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 04:34:05,590 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 04:34:05,590 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 04:34:05,611 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 04:34:05,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 04:34:05,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:05,621 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] [2020-10-13 04:34:05,621 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:05,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:05,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1461178031, now seen corresponding path program 1 times [2020-10-13 04:34:05,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:05,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060362907] [2020-10-13 04:34:05,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:05,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:05,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:05,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:05,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:06,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 04:34:06,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:06,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-13 04:34:06,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:34:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:06,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 04:34:06,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:06,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:06,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:06,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:06,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 04:34:06,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:06,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:06,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:06,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:06,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:06,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:34:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:06,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:06,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:06,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:06,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:34:06,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:06,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:06,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:06,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 04:34:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:06,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:06,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:06,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:06,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:34:06,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:06,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:06,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:34:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:06,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:06,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:06,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:06,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:34:06,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:06,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:06,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:34:06,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:06,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 04:34:06,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060362907] [2020-10-13 04:34:06,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:34:06,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 04:34:06,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729450839] [2020-10-13 04:34:06,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 04:34:06,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:06,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 04:34:06,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:34:06,427 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 04:34:06,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:06,554 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 04:34:06,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 04:34:06,557 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 04:34:06,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:06,566 INFO L225 Difference]: With dead ends: 54 [2020-10-13 04:34:06,566 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 04:34:06,570 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 [2020-10-13 04:34:06,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 04:34:06,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 04:34:06,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 04:34:06,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 04:34:06,614 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 04:34:06,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:06,615 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 04:34:06,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 04:34:06,615 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 04:34:06,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 04:34:06,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:06,618 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] [2020-10-13 04:34:06,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 04:34:06,619 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:06,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:06,620 INFO L82 PathProgramCache]: Analyzing trace with hash -595992629, now seen corresponding path program 1 times [2020-10-13 04:34:06,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:06,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150090469] [2020-10-13 04:34:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:06,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:07,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:07,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 04:34:07,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:07,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-10-13 04:34:07,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:34:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 04:34:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:34:07,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:07,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:07,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:07,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:07,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:07,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:07,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:34:07,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:07,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:07,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:07,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:07,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:07,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:34:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:07,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:07,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:07,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:07,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:34:07,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:07,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:34:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:34:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:34:07,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:07,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 04:34:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:07,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:07,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:07,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:07,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:07,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:07,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:34:07,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:34:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:07,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:07,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:34:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:07,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:07,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:07,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:07,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:07,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:34:07,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:34:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:07,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 04:34:07,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150090469] [2020-10-13 04:34:07,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:07,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 04:34:07,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956345048] [2020-10-13 04:34:07,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:34:07,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:07,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:34:07,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:34:07,874 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 04:34:08,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:08,001 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-13 04:34:08,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:34:08,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 04:34:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:08,005 INFO L225 Difference]: With dead ends: 45 [2020-10-13 04:34:08,005 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 04:34:08,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:34:08,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 04:34:08,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 04:34:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 04:34:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 04:34:08,022 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 04:34:08,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:08,022 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 04:34:08,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:34:08,023 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 04:34:08,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 04:34:08,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:08,025 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] [2020-10-13 04:34:08,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 04:34:08,025 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:08,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:08,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1309759401, now seen corresponding path program 1 times [2020-10-13 04:34:08,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:08,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933260487] [2020-10-13 04:34:08,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:08,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:08,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:08,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:08,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:08,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:10,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 04:34:10,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:10,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2256 [2020-10-13 04:34:10,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:10,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:34:10,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 04:34:10,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:34:10,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:10,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:10,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:10,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:10,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:10,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:34:10,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:10,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:10,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:10,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:10,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:10,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:34:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:10,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:10,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:10,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:10,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:34:10,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:10,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:10,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:10,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 04:34:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:10,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:10,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:10,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:10,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:34:10,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:10,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:10,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:10,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:10,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:10,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:34:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:10,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:10,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:10,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:10,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:34:10,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:10,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:10,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 04:34:10,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933260487] [2020-10-13 04:34:10,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:34:10,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:34:10,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390440618] [2020-10-13 04:34:10,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:34:10,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:10,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:34:10,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:34:10,414 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 04:34:10,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:10,501 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-13 04:34:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:34:10,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 04:34:10,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:10,503 INFO L225 Difference]: With dead ends: 42 [2020-10-13 04:34:10,504 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 04:34:10,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:34:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 04:34:10,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 04:34:10,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 04:34:10,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 04:34:10,512 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-13 04:34:10,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:10,515 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 04:34:10,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:34:10,516 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 04:34:10,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 04:34:10,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:10,518 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, 1, 1] [2020-10-13 04:34:10,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 04:34:10,519 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:10,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:10,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1209333671, now seen corresponding path program 1 times [2020-10-13 04:34:10,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:10,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415607630] [2020-10-13 04:34:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:10,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:13,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:13,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 04:34:13,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:13,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3465 [2020-10-13 04:34:13,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:34:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:34:14,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:14,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:14,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:14,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:14,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:14,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:34:14,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:14,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:14,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 04:34:14,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:34:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:14,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:14,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:14,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:34:14,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:14,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:14,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 04:34:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:14,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:14,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:14,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:14,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:34:14,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:14,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:14,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:34:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:14,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:14,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:14,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:14,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:34:14,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:14,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:14,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:14,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:14,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 04:34:14,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415607630] [2020-10-13 04:34:14,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:34:14,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:34:14,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057888761] [2020-10-13 04:34:14,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:34:14,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:14,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:34:14,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:34:14,159 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 04:34:14,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:14,284 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-13 04:34:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:34:14,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 04:34:14,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:14,286 INFO L225 Difference]: With dead ends: 50 [2020-10-13 04:34:14,286 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 04:34:14,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:34:14,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 04:34:14,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 04:34:14,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 04:34:14,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 04:34:14,303 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 04:34:14,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:14,304 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 04:34:14,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:34:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 04:34:14,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 04:34:14,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:14,306 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, 1, 1, 1, 1] [2020-10-13 04:34:14,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 04:34:14,306 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:14,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:14,307 INFO L82 PathProgramCache]: Analyzing trace with hash -233991671, now seen corresponding path program 1 times [2020-10-13 04:34:14,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:14,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558723079] [2020-10-13 04:34:14,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:14,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:18,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:18,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 04:34:18,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:18,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4583 [2020-10-13 04:34:18,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:34:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 04:34:18,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:34:18,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:18,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:18,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:18,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:18,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:18,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:18,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:18,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:18,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:18,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:34:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:18,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:18,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:18,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:18,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:18,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:34:18,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:34:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:34:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:34:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:18,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 04:34:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:18,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:18,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:19,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:19,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:19,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:34:19,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:19,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:19,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:19,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:19,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:19,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:34:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:19,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:19,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:19,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:19,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:34:19,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:19,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:19,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:19,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:19,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:19,033 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 04:34:19,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558723079] [2020-10-13 04:34:19,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:19,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:34:19,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947044094] [2020-10-13 04:34:19,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:34:19,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:19,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:34:19,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:34:19,038 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 04:34:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:19,161 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-13 04:34:19,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:34:19,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 04:34:19,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:19,164 INFO L225 Difference]: With dead ends: 51 [2020-10-13 04:34:19,164 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 04:34:19,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:34:19,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 04:34:19,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 04:34:19,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 04:34:19,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 04:34:19,183 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 04:34:19,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:19,184 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 04:34:19,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:34:19,186 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 04:34:19,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 04:34:19,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:19,187 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, 1, 1, 1, 1] [2020-10-13 04:34:19,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 04:34:19,188 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:19,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:19,188 INFO L82 PathProgramCache]: Analyzing trace with hash -571391385, now seen corresponding path program 2 times [2020-10-13 04:34:19,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:19,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737293976] [2020-10-13 04:34:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:19,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:19,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:24,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:24,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 04:34:24,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:24,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 04:34:24,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:34:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:34:24,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:24,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:24,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:24,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:24,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:24,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:24,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:24,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:24,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:24,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:24,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:24,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:34:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:24,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:24,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:24,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:24,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:24,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:34:24,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:24,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:24,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:34:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:24,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:24,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:24,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:24,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:24,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:24,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:34:24,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:24,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:24,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:24,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:34:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:24,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:24,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:24,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:24,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:24,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:24,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:34:24,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:24,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:24,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:24,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-13 04:34:24,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737293976] [2020-10-13 04:34:24,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:24,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:34:24,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716997443] [2020-10-13 04:34:24,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:34:24,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:24,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:34:24,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:34:24,314 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-13 04:34:24,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:24,404 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-10-13 04:34:24,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:34:24,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-13 04:34:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:24,406 INFO L225 Difference]: With dead ends: 56 [2020-10-13 04:34:24,406 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 04:34:24,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:34:24,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 04:34:24,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 04:34:24,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 04:34:24,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 04:34:24,418 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2020-10-13 04:34:24,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:24,419 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 04:34:24,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:34:24,419 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 04:34:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 04:34:24,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:24,421 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:24,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 04:34:24,423 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:24,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:24,424 INFO L82 PathProgramCache]: Analyzing trace with hash -52274487, now seen corresponding path program 3 times [2020-10-13 04:34:24,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:24,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739943191] [2020-10-13 04:34:24,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:24,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:24,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:24,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:24,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:24,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:29,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:29,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 04:34:29,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:29,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:34:29,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:34:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 04:34:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:34:29,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:29,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:29,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:29,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:29,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:29,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:29,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:29,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:29,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:29,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:29,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:29,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:34:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:29,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:29,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:29,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:29,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:29,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:29,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:34:29,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:29,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:29,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:29,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:29,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:29,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 04:34:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:29,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:29,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:29,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:29,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:29,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:29,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:34:29,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:29,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:29,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:29,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:29,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:29,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:34:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:29,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:29,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:29,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:29,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:29,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:29,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:34:29,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:29,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 04:34:29,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739943191] [2020-10-13 04:34:29,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:29,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:34:29,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556891031] [2020-10-13 04:34:29,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:34:29,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:29,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:34:29,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:34:29,543 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 04:34:29,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:29,643 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-13 04:34:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:34:29,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-13 04:34:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:29,645 INFO L225 Difference]: With dead ends: 51 [2020-10-13 04:34:29,645 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 04:34:29,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:34:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 04:34:29,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 04:34:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 04:34:29,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 04:34:29,655 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2020-10-13 04:34:29,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:29,655 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 04:34:29,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:34:29,656 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 04:34:29,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 04:34:29,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:29,658 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:29,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 04:34:29,659 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:29,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:29,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1717617977, now seen corresponding path program 4 times [2020-10-13 04:34:29,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:29,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549293788] [2020-10-13 04:34:29,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:29,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:29,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:29,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:29,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:30,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:34,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:34,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 04:34:34,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 04:34:34,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:34:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:34:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:34,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:34,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:34,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:34,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:34,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:34,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:34,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:34,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:34,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:34,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:34:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:34,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:34,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:34,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:34,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:34,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:34:34,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:34,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:34,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 04:34:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:34,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:34,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:34,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:34,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:34,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:34,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:34:34,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:34,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:34:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:34,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:34,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:34,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:34,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:34,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:34:34,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:34,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 04:34:34,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549293788] [2020-10-13 04:34:34,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:34,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:34:34,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638101253] [2020-10-13 04:34:34,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:34:34,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:34,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:34:34,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:34:34,766 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 04:34:34,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:34,891 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-13 04:34:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:34:34,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 04:34:34,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:34,892 INFO L225 Difference]: With dead ends: 62 [2020-10-13 04:34:34,892 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 04:34:34,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:34:34,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 04:34:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 04:34:34,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 04:34:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 04:34:34,899 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-13 04:34:34,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:34,899 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 04:34:34,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:34:34,899 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 04:34:34,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 04:34:34,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:34,900 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:34,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 04:34:34,901 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:34,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:34,901 INFO L82 PathProgramCache]: Analyzing trace with hash 799625769, now seen corresponding path program 5 times [2020-10-13 04:34:34,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:34,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691727473] [2020-10-13 04:34:34,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:34,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:34,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:34,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:34,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:35,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:39,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:39,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 04:34:39,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:39,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:34:39,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:34:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 04:34:39,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:34:39,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:39,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:39,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:39,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:39,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:39,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:39,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:39,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:39,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:34:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:39,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:39,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:39,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:39,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:39,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:34:39,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:39,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:39,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 04:34:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:39,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:39,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:39,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:39,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:39,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:39,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:34:39,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:39,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:39,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:39,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:39,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:39,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 04:34:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:39,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:40,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:40,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:40,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:40,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:40,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:34:40,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:40,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:40,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:40,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:40,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:40,015 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 04:34:40,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691727473] [2020-10-13 04:34:40,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:40,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:34:40,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159226934] [2020-10-13 04:34:40,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:34:40,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:40,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:34:40,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:34:40,017 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-13 04:34:40,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:40,103 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2020-10-13 04:34:40,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:34:40,103 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-13 04:34:40,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:40,105 INFO L225 Difference]: With dead ends: 55 [2020-10-13 04:34:40,105 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 04:34:40,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:34:40,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 04:34:40,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 04:34:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 04:34:40,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 04:34:40,111 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 54 [2020-10-13 04:34:40,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:40,112 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 04:34:40,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:34:40,112 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 04:34:40,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 04:34:40,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:40,113 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:40,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 04:34:40,113 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:40,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:40,114 INFO L82 PathProgramCache]: Analyzing trace with hash 914741799, now seen corresponding path program 6 times [2020-10-13 04:34:40,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:40,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678222814] [2020-10-13 04:34:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:40,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:40,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:40,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:40,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:40,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:45,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:45,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 04:34:45,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:45,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 04:34:45,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:45,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:34:45,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 04:34:45,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:34:45,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:45,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:45,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:45,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:45,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:45,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:45,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:45,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:45,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:45,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:34:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:45,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:45,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:45,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:45,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:45,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:45,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:34:45,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:45,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 04:34:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:45,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:45,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:45,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:45,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:45,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:34:45,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:45,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:45,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:45,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 04:34:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:45,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:45,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:45,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:45,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:45,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 04:34:45,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:45,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:34:45,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:34:45,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:34:45,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:45,215 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-13 04:34:45,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678222814] [2020-10-13 04:34:45,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:45,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:34:45,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310227011] [2020-10-13 04:34:45,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:34:45,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:45,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:34:45,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:34:45,218 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2020-10-13 04:34:45,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:45,346 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-10-13 04:34:45,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:34:45,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 04:34:45,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:45,347 INFO L225 Difference]: With dead ends: 67 [2020-10-13 04:34:45,347 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 04:34:45,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:34:45,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 04:34:45,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 04:34:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 04:34:45,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 04:34:45,354 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 56 [2020-10-13 04:34:45,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:45,354 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 04:34:45,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:34:45,355 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 04:34:45,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 04:34:45,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:45,355 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:45,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 04:34:45,356 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:45,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:45,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1655752187, now seen corresponding path program 7 times [2020-10-13 04:34:45,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:45,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281440974] [2020-10-13 04:34:45,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:45,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:45,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:45,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:45,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:49,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:50,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:50,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 04:34:50,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:50,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:34:50,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:50,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:34:50,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 04:34:50,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:34:50,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:50,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:50,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:50,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:50,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:50,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:50,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:50,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:50,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:50,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:34:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:50,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:50,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:50,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:50,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:50,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:50,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:34:50,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:50,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:50,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 04:34:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:50,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:50,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:50,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:50,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:50,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:50,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:34:50,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:50,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:50,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:50,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:50,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:34:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:50,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:50,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:50,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:50,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:50,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:34:50,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:50,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:34:50,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:34:50,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:34:50,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:50,475 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 56 proven. 9 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 04:34:50,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281440974] [2020-10-13 04:34:50,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:50,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:34:50,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8855576] [2020-10-13 04:34:50,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:34:50,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:50,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:34:50,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:34:50,477 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 04:34:50,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:50,620 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-10-13 04:34:50,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:34:50,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-13 04:34:50,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:50,622 INFO L225 Difference]: With dead ends: 71 [2020-10-13 04:34:50,622 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 04:34:50,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:34:50,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 04:34:50,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 04:34:50,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 04:34:50,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 04:34:50,629 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-13 04:34:50,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:50,630 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 04:34:50,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:34:50,630 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 04:34:50,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 04:34:50,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:50,631 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:50,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 04:34:50,631 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:50,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:50,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1001257827, now seen corresponding path program 8 times [2020-10-13 04:34:50,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:50,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161482879] [2020-10-13 04:34:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:50,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:50,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:50,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:50,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:55,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:55,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 04:34:55,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:34:55,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:34:55,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:34:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:34:55,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:55,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:55,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:55,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:55,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:55,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:55,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:55,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:55,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:55,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:34:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:55,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:55,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:55,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:34:55,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:55,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:34:55,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:34:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:55,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:55,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 04:34:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:55,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:55,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:55,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:55,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:34:55,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:55,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:34:55,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:34:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:55,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:55,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 04:34:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:55,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:55,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:55,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:55,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:34:55,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:55,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:34:55,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:55,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:55,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:34:55,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:55,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-13 04:34:55,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161482879] [2020-10-13 04:34:55,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:55,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:34:55,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133321421] [2020-10-13 04:34:55,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:34:55,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:55,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:34:55,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:34:55,762 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 7 states. [2020-10-13 04:34:55,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:55,847 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2020-10-13 04:34:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:34:55,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-13 04:34:55,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:55,849 INFO L225 Difference]: With dead ends: 76 [2020-10-13 04:34:55,849 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 04:34:55,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:34:55,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 04:34:55,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 04:34:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 04:34:55,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 04:34:55,856 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-13 04:34:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:55,856 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 04:34:55,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:34:55,856 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 04:34:55,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 04:34:55,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:55,857 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:55,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 04:34:55,858 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:55,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:55,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1582231867, now seen corresponding path program 9 times [2020-10-13 04:34:55,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:55,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683783018] [2020-10-13 04:34:55,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:55,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:55,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:55,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:55,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:00,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:00,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 04:35:00,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:00,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:35:00,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:00,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:35:00,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 04:35:00,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:35:00,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:00,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:00,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:00,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:00,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:00,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:00,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:00,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:00,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:00,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:00,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:00,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:00,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:35:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:00,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:00,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:00,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:00,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:00,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:35:00,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:00,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:00,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:00,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:00,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:00,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:35:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:00,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:00,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:00,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:00,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:00,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:00,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:35:00,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:00,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:00,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:00,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:00,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:00,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 04:35:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:00,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:00,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:00,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:00,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:00,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:00,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:35:00,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:35:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:00,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:00,989 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-13 04:35:00,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683783018] [2020-10-13 04:35:00,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:00,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:35:00,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448237043] [2020-10-13 04:35:00,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:35:00,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:00,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:35:00,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:35:00,991 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-13 04:35:01,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:01,083 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-10-13 04:35:01,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:35:01,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-13 04:35:01,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:01,085 INFO L225 Difference]: With dead ends: 67 [2020-10-13 04:35:01,085 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 04:35:01,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:35:01,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 04:35:01,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 04:35:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 04:35:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 04:35:01,092 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-13 04:35:01,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:01,092 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 04:35:01,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:35:01,093 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 04:35:01,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 04:35:01,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:01,094 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:01,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 04:35:01,094 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:01,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:01,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1541017661, now seen corresponding path program 10 times [2020-10-13 04:35:01,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:01,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386492789] [2020-10-13 04:35:01,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:01,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:01,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:01,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:01,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:06,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:06,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 04:35:06,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:06,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:35:06,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:06,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:35:06,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 04:35:06,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:35:06,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:06,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:06,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:06,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:06,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:06,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:06,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:06,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:06,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:06,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:06,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:06,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:06,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:35:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:06,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:06,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:06,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:06,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:06,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:35:06,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:06,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:35:06,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:35:06,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:35:06,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:06,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:35:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:06,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:06,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:06,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:06,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:06,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:06,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:35:06,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:06,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:06,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:35:06,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:06,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:06,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:35:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:06,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:06,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:06,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:06,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:06,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:06,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:35:06,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:35:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:06,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:06,202 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-13 04:35:06,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386492789] [2020-10-13 04:35:06,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:06,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:35:06,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411738234] [2020-10-13 04:35:06,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:35:06,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:06,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:35:06,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:35:06,204 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-13 04:35:06,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:06,349 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-13 04:35:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:35:06,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-13 04:35:06,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:06,353 INFO L225 Difference]: With dead ends: 81 [2020-10-13 04:35:06,353 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 04:35:06,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:35:06,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 04:35:06,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 04:35:06,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 04:35:06,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 04:35:06,363 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 72 [2020-10-13 04:35:06,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:06,363 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 04:35:06,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:35:06,363 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 04:35:06,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 04:35:06,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:06,364 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:06,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 04:35:06,365 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:06,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:06,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1836873311, now seen corresponding path program 11 times [2020-10-13 04:35:06,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:06,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631309575] [2020-10-13 04:35:06,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:06,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:06,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:06,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:06,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:11,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:11,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 04:35:11,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:11,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:35:11,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:11,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:35:11,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-13 04:35:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:35:11,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:11,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:11,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:11,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:11,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:11,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:11,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:11,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:11,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:11,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:35:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:11,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:11,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:11,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:11,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:11,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:11,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:35:11,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:11,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:11,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:11,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:11,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:11,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 04:35:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:11,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:11,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:11,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:11,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:11,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:11,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:35:11,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:11,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:11,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:11,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:11,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:11,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:35:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:11,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:11,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:11,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:11,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:11,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:11,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:35:11,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:11,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:11,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:11,467 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 04:35:11,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631309575] [2020-10-13 04:35:11,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:11,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:35:11,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496152454] [2020-10-13 04:35:11,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:35:11,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:11,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:35:11,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:35:11,469 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 04:35:11,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:11,568 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2020-10-13 04:35:11,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:35:11,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-13 04:35:11,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:11,569 INFO L225 Difference]: With dead ends: 73 [2020-10-13 04:35:11,569 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 04:35:11,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:35:11,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 04:35:11,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 04:35:11,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 04:35:11,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 04:35:11,576 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2020-10-13 04:35:11,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:11,576 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 04:35:11,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:35:11,576 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 04:35:11,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 04:35:11,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:11,577 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:11,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 04:35:11,578 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:11,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:11,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1726786463, now seen corresponding path program 12 times [2020-10-13 04:35:11,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:11,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088795564] [2020-10-13 04:35:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:11,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:11,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:11,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:11,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:16,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:16,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 04:35:16,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:16,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:35:16,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:35:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:35:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:35:16,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:16,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:16,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:16,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:16,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:16,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:16,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:16,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:16,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:16,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:35:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:16,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:16,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:16,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:16,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:16,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:16,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:35:16,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:16,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:16,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:16,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:16,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 04:35:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:16,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:16,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:16,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:16,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:16,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:16,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:35:16,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:16,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:16,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:16,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:16,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:16,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 04:35:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:16,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:16,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:16,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:16,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:16,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:16,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:35:16,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:16,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:16,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:35:16,734 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-13 04:35:16,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088795564] [2020-10-13 04:35:16,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:16,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:35:16,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978843998] [2020-10-13 04:35:16,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:35:16,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:16,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:35:16,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:35:16,742 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 8 states. [2020-10-13 04:35:16,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:16,867 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2020-10-13 04:35:16,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:35:16,868 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-13 04:35:16,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:16,869 INFO L225 Difference]: With dead ends: 90 [2020-10-13 04:35:16,869 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 04:35:16,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:35:16,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 04:35:16,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 04:35:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 04:35:16,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 04:35:16,884 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-13 04:35:16,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:16,885 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 04:35:16,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:35:16,885 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 04:35:16,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 04:35:16,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:16,887 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:16,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 04:35:16,887 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:16,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:16,888 INFO L82 PathProgramCache]: Analyzing trace with hash -401359871, now seen corresponding path program 13 times [2020-10-13 04:35:16,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:16,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960015866] [2020-10-13 04:35:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:16,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:16,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:16,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:17,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:21,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:21,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 04:35:21,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:21,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:35:21,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:21,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:35:21,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 04:35:21,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:35:21,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:21,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:21,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:21,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:21,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:21,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:21,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:21,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:21,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:21,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:21,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:35:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:21,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:21,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:21,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:21,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:21,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:35:21,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:35:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:35:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:35:21,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:21,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 04:35:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:21,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:22,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:22,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:22,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:22,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:22,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:35:22,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:22,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:35:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 04:35:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:22,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:22,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:22,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:22,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:22,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:22,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 04:35:22,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:22,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:22,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:22,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:22,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-13 04:35:22,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960015866] [2020-10-13 04:35:22,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:22,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:35:22,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717294930] [2020-10-13 04:35:22,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:35:22,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:22,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:35:22,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:35:22,088 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 9 states. [2020-10-13 04:35:22,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:22,300 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-10-13 04:35:22,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:35:22,301 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-13 04:35:22,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:22,302 INFO L225 Difference]: With dead ends: 91 [2020-10-13 04:35:22,302 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 04:35:22,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:35:22,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 04:35:22,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 04:35:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 04:35:22,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 04:35:22,321 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 82 [2020-10-13 04:35:22,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:22,322 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 04:35:22,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:35:22,322 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 04:35:22,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 04:35:22,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:22,324 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:22,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 04:35:22,326 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:22,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:22,327 INFO L82 PathProgramCache]: Analyzing trace with hash -53408161, now seen corresponding path program 14 times [2020-10-13 04:35:22,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:22,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674178723] [2020-10-13 04:35:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:22,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:22,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:22,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:27,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:27,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 04:35:27,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:27,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:35:27,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:27,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:35:27,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 04:35:27,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:35:27,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:27,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:27,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:27,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:27,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:27,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:27,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:35:27,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:27,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:27,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:35:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:27,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:27,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:27,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:27,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:27,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:27,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:35:27,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:27,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:27,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:27,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:27,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:27,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 04:35:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:27,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:27,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:27,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:27,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:27,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:27,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:35:27,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:27,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:35:27,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 04:35:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:27,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:27,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:27,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:27,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:27,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:35:27,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:27,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:27,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:27,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:27,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2020-10-13 04:35:27,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674178723] [2020-10-13 04:35:27,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:27,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:35:27,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48516156] [2020-10-13 04:35:27,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:35:27,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:27,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:35:27,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:35:27,519 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-13 04:35:27,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:27,626 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-10-13 04:35:27,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:35:27,627 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-13 04:35:27,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:27,628 INFO L225 Difference]: With dead ends: 81 [2020-10-13 04:35:27,628 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 04:35:27,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:35:27,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 04:35:27,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 04:35:27,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 04:35:27,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 04:35:27,635 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 88 [2020-10-13 04:35:27,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:27,635 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 04:35:27,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:35:27,636 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 04:35:27,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 04:35:27,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:27,638 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:27,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 04:35:27,638 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:27,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:27,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1529773859, now seen corresponding path program 15 times [2020-10-13 04:35:27,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:27,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103670251] [2020-10-13 04:35:27,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:27,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:27,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:27,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:32,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:32,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 04:35:32,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:32,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:35:32,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:35:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:35:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:35:32,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:32,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:32,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:32,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:32,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:32,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:32,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:32,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:32,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:32,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:32,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:32,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:32,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:35:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:32,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:32,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:32,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:32,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:32,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:32,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:35:32,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:32,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:32,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 04:35:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:32,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:32,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:32,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:32,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:32,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:32,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:35:32,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:32,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:32,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 04:35:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:32,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:32,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:32,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:32,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:32,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:32,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:35:32,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:32,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:32,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 04:35:32,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103670251] [2020-10-13 04:35:32,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:32,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:35:32,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464984121] [2020-10-13 04:35:32,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:35:32,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:32,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:35:32,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:35:32,777 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 9 states. [2020-10-13 04:35:32,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:32,855 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2020-10-13 04:35:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:35:32,856 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 04:35:32,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:32,856 INFO L225 Difference]: With dead ends: 100 [2020-10-13 04:35:32,857 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 04:35:32,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:35:32,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 04:35:32,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 04:35:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 04:35:32,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 04:35:32,862 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 90 [2020-10-13 04:35:32,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:32,862 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 04:35:32,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:35:32,862 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 04:35:32,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 04:35:32,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:32,863 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 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] [2020-10-13 04:35:32,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 04:35:32,864 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:32,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:32,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1810955967, now seen corresponding path program 16 times [2020-10-13 04:35:32,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:32,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009560711] [2020-10-13 04:35:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:32,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:32,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:32,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:33,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:37,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:37,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 04:35:37,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:37,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 04:35:37,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:35:37,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 04:35:37,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:35:37,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:37,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:37,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:37,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:37,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:37,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:37,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:37,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:37,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:37,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:37,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:37,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:37,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:35:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:37,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:37,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:37,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:37,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:37,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:37,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:35:37,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:37,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:37,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:37,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:37,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:37,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 04:35:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:37,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:37,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:37,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:37,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:37,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:37,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:35:37,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:37,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:37,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 04:35:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:37,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:37,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:38,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:38,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:38,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:38,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:35:38,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:38,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:38,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:38,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:38,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 04:35:38,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009560711] [2020-10-13 04:35:38,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:38,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:35:38,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250241390] [2020-10-13 04:35:38,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:35:38,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:38,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:35:38,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:35:38,015 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 10 states. [2020-10-13 04:35:38,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:38,130 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-10-13 04:35:38,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:35:38,131 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-13 04:35:38,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:38,132 INFO L225 Difference]: With dead ends: 85 [2020-10-13 04:35:38,132 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 04:35:38,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:35:38,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 04:35:38,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 04:35:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 04:35:38,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 04:35:38,140 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 92 [2020-10-13 04:35:38,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:38,141 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 04:35:38,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:35:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 04:35:38,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 04:35:38,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:38,144 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 7, 7, 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] [2020-10-13 04:35:38,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 04:35:38,144 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:38,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:38,144 INFO L82 PathProgramCache]: Analyzing trace with hash -877209283, now seen corresponding path program 17 times [2020-10-13 04:35:38,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:38,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074523934] [2020-10-13 04:35:38,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:38,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:38,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:38,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:38,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:43,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:43,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 04:35:43,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:43,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:35:43,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:43,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:35:43,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 04:35:43,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:35:43,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:43,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:43,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:43,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:43,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:43,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:43,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:43,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:43,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:35:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:43,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:43,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:43,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:43,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:43,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:35:43,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:35:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:35:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:35:43,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:43,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 04:35:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:43,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:43,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:43,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:43,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:43,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:43,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:35:43,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:43,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:43,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:43,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:43,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:43,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 04:35:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:43,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:43,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:43,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:43,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:43,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:43,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:35:43,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:43,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:43,305 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-10-13 04:35:43,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074523934] [2020-10-13 04:35:43,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:43,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:35:43,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877346806] [2020-10-13 04:35:43,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:35:43,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:43,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:35:43,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:35:43,308 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 10 states. [2020-10-13 04:35:43,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:43,486 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-10-13 04:35:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:35:43,487 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-13 04:35:43,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:43,488 INFO L225 Difference]: With dead ends: 105 [2020-10-13 04:35:43,488 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 04:35:43,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:35:43,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 04:35:43,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 04:35:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 04:35:43,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 04:35:43,494 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 94 [2020-10-13 04:35:43,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:43,494 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 04:35:43,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:35:43,495 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 04:35:43,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 04:35:43,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:43,496 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 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] [2020-10-13 04:35:43,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 04:35:43,496 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:43,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:43,497 INFO L82 PathProgramCache]: Analyzing trace with hash -403632997, now seen corresponding path program 18 times [2020-10-13 04:35:43,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:43,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688974732] [2020-10-13 04:35:43,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:43,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:43,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:43,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:43,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:48,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:48,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 04:35:48,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:48,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:35:48,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:35:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:35:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:35:48,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:48,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:48,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:48,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:48,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:48,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:48,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:48,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:48,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:48,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:35:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:48,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:48,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:48,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:48,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:35:48,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:48,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:35:48,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:35:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:48,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:48,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:35:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:48,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:48,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:48,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:48,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:35:48,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:48,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:35:48,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:48,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:48,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:35:48,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:48,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:48,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 04:35:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:48,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:48,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:48,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:35:48,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:48,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:35:48,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:35:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:48,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-13 04:35:48,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688974732] [2020-10-13 04:35:48,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:48,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:35:48,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993443200] [2020-10-13 04:35:48,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:35:48,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:48,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:35:48,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:35:48,650 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 10 states. [2020-10-13 04:35:48,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:48,755 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2020-10-13 04:35:48,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:35:48,758 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-10-13 04:35:48,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:48,759 INFO L225 Difference]: With dead ends: 110 [2020-10-13 04:35:48,759 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 04:35:48,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:35:48,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 04:35:48,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 04:35:48,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 04:35:48,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 04:35:48,766 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 100 [2020-10-13 04:35:48,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:48,766 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 04:35:48,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:35:48,766 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 04:35:48,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 04:35:48,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:48,767 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:48,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 04:35:48,768 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:48,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:48,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1317136387, now seen corresponding path program 19 times [2020-10-13 04:35:48,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:48,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130142893] [2020-10-13 04:35:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:48,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:48,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:48,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:48,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:53,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:53,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 04:35:53,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:53,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:35:53,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:53,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:35:53,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 04:35:53,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:35:53,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:53,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:53,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:53,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:53,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:53,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:53,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:53,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:53,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:53,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:53,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:53,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:53,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:35:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:53,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:53,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:53,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:53,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:35:53,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:53,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:35:53,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:53,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:53,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 04:35:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:53,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:53,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:53,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:35:53,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:53,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:35:53,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:35:53,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:35:53,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:35:53,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:53,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 04:35:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:53,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:53,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:53,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:53,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:35:53,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:53,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:35:53,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:53,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:53,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:35:53,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:53,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 116 proven. 165 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-13 04:35:53,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130142893] [2020-10-13 04:35:53,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:53,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:35:53,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664758892] [2020-10-13 04:35:53,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:35:53,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:53,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:35:53,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:35:53,951 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 11 states. [2020-10-13 04:35:54,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:54,160 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2020-10-13 04:35:54,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:35:54,160 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-13 04:35:54,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:54,161 INFO L225 Difference]: With dead ends: 111 [2020-10-13 04:35:54,161 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 04:35:54,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:35:54,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 04:35:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 04:35:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 04:35:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 04:35:54,168 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 102 [2020-10-13 04:35:54,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:54,168 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 04:35:54,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:35:54,168 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 04:35:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 04:35:54,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:54,169 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:54,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 04:35:54,170 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:54,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:54,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1069382491, now seen corresponding path program 20 times [2020-10-13 04:35:54,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:54,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438706800] [2020-10-13 04:35:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:54,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:54,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:54,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:54,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:59,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:59,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 04:35:59,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:59,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:35:59,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:59,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:35:59,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:35:59,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:35:59,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:59,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:59,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:59,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:59,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:59,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:59,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:59,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:59,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:59,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:59,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:59,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:59,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:35:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:59,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:59,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:59,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:59,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:35:59,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:59,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:35:59,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:35:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:59,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:59,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 04:35:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:59,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:59,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:59,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:59,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:35:59,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:59,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:35:59,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:59,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:59,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:35:59,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:59,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:59,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 04:35:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:59,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:59,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:59,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:59,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:35:59,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:59,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:35:59,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:59,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:59,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:35:59,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:59,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2020-10-13 04:35:59,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438706800] [2020-10-13 04:35:59,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:59,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:35:59,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930423761] [2020-10-13 04:35:59,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:35:59,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:59,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:35:59,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:35:59,355 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 11 states. [2020-10-13 04:35:59,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:59,436 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-13 04:35:59,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:35:59,437 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-13 04:35:59,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:59,438 INFO L225 Difference]: With dead ends: 116 [2020-10-13 04:35:59,438 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 04:35:59,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:35:59,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 04:35:59,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 04:35:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 04:35:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 04:35:59,443 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-13 04:35:59,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:59,444 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 04:35:59,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:35:59,444 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 04:35:59,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 04:35:59,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:59,445 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:35:59,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 04:35:59,445 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:59,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:59,446 INFO L82 PathProgramCache]: Analyzing trace with hash -549321539, now seen corresponding path program 21 times [2020-10-13 04:35:59,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:59,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079984194] [2020-10-13 04:35:59,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:59,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:59,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:59,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:04,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:04,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 04:36:04,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:04,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:36:04,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:04,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:36:04,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 04:36:04,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:36:04,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:04,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:04,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:04,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:04,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:04,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:04,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:04,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:04,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:04,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:36:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:04,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:04,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:04,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:04,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:04,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:04,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:36:04,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:04,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:04,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 04:36:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:04,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:04,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:04,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:04,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:04,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:04,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:36:04,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:04,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:04,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 04:36:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:04,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:04,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:04,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:04,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:04,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:04,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:36:04,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:04,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:04,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:36:04,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:04,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:04,657 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 04:36:04,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079984194] [2020-10-13 04:36:04,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:04,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:36:04,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886805735] [2020-10-13 04:36:04,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:36:04,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:04,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:36:04,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:36:04,658 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 11 states. [2020-10-13 04:36:04,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:04,764 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2020-10-13 04:36:04,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:36:04,765 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-10-13 04:36:04,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:04,766 INFO L225 Difference]: With dead ends: 99 [2020-10-13 04:36:04,766 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 04:36:04,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:36:04,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 04:36:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 04:36:04,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 04:36:04,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 04:36:04,771 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 110 [2020-10-13 04:36:04,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:04,772 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 04:36:04,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:36:04,772 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 04:36:04,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 04:36:04,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:04,773 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:04,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 04:36:04,774 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:04,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:04,774 INFO L82 PathProgramCache]: Analyzing trace with hash -278698053, now seen corresponding path program 22 times [2020-10-13 04:36:04,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:04,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869939127] [2020-10-13 04:36:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:04,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:04,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:04,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:09,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:09,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 04:36:09,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:09,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 04:36:09,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:36:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 04:36:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:36:09,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:09,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:09,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:09,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:09,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:09,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:09,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:09,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:09,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:09,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:36:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:09,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:09,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:09,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:09,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:09,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:09,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:36:09,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:09,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:09,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 04:36:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:09,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:09,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:09,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:09,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:09,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:36:09,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:36:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:36:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:36:09,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:09,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 04:36:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:09,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:09,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:09,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:09,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:09,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:09,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:36:09,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:09,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:09,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:36:09,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:09,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 148 proven. 212 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2020-10-13 04:36:09,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869939127] [2020-10-13 04:36:09,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:09,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:36:09,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293287610] [2020-10-13 04:36:09,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:36:09,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:09,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:36:09,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:36:09,966 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 04:36:10,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:10,202 INFO L93 Difference]: Finished difference Result 121 states and 131 transitions. [2020-10-13 04:36:10,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:36:10,203 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-13 04:36:10,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:10,204 INFO L225 Difference]: With dead ends: 121 [2020-10-13 04:36:10,204 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 04:36:10,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 04:36:10,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 04:36:10,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 04:36:10,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 04:36:10,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 04:36:10,212 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-13 04:36:10,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:10,213 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 04:36:10,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:36:10,214 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 04:36:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 04:36:10,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:10,215 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:10,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 04:36:10,215 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:10,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:10,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1486168985, now seen corresponding path program 23 times [2020-10-13 04:36:10,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:10,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443248824] [2020-10-13 04:36:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:10,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:10,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:10,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:10,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:15,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:15,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 04:36:15,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:36:15,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:36:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 04:36:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:36:15,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:15,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:15,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:15,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:15,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:15,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:15,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:15,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:15,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:15,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:15,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:15,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:15,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:36:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:15,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:15,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:15,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:15,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:15,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:36:15,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:15,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:15,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:15,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:15,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:15,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 04:36:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:15,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:15,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:15,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:15,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:15,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:36:15,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:15,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:15,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:15,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:15,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:15,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 04:36:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:15,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:15,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:15,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:15,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:15,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:15,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:36:15,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:15,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:15,403 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2020-10-13 04:36:15,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443248824] [2020-10-13 04:36:15,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:15,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:36:15,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046698334] [2020-10-13 04:36:15,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:36:15,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:15,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:36:15,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:36:15,405 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 12 states. [2020-10-13 04:36:15,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:15,514 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2020-10-13 04:36:15,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:36:15,515 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 118 [2020-10-13 04:36:15,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:15,516 INFO L225 Difference]: With dead ends: 105 [2020-10-13 04:36:15,516 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 04:36:15,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:36:15,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 04:36:15,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 04:36:15,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 04:36:15,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 04:36:15,521 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 118 [2020-10-13 04:36:15,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:15,521 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 04:36:15,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:36:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 04:36:15,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 04:36:15,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:15,523 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:15,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 04:36:15,523 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:15,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:15,523 INFO L82 PathProgramCache]: Analyzing trace with hash -519452777, now seen corresponding path program 24 times [2020-10-13 04:36:15,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:15,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274727887] [2020-10-13 04:36:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:15,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:15,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:15,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:15,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:20,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:20,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 04:36:20,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:20,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 04:36:20,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:20,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:36:20,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:36:20,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:36:20,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:20,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:20,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:20,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:20,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:20,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:20,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:20,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:20,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:20,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:20,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:20,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:20,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:36:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:20,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:20,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:20,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:20,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:20,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:20,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:36:20,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:20,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:20,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:20,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:20,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:20,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 04:36:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:20,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:20,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:20,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:20,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:20,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:36:20,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:20,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 04:36:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:20,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:20,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:20,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:20,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:20,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:20,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:36:20,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:20,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:20,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:20,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:20,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2020-10-13 04:36:20,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274727887] [2020-10-13 04:36:20,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:20,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:36:20,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751873407] [2020-10-13 04:36:20,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:36:20,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:20,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:36:20,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:36:20,719 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 12 states. [2020-10-13 04:36:20,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:20,832 INFO L93 Difference]: Finished difference Result 130 states and 138 transitions. [2020-10-13 04:36:20,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:36:20,833 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-13 04:36:20,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:20,834 INFO L225 Difference]: With dead ends: 130 [2020-10-13 04:36:20,834 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 04:36:20,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:36:20,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 04:36:20,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 04:36:20,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 04:36:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 04:36:20,842 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 120 [2020-10-13 04:36:20,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:20,842 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 04:36:20,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:36:20,842 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 04:36:20,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 04:36:20,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:20,843 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 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] [2020-10-13 04:36:20,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 04:36:20,844 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:20,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:20,844 INFO L82 PathProgramCache]: Analyzing trace with hash -953070087, now seen corresponding path program 25 times [2020-10-13 04:36:20,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:20,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850200238] [2020-10-13 04:36:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:20,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:20,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:20,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:21,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:25,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:25,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 04:36:25,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:25,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:36:25,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:36:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 04:36:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:36:25,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:25,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:25,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:25,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:25,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:25,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:25,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:25,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:25,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:25,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:36:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:25,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:25,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:25,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:25,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:25,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:25,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:36:25,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:25,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:25,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:25,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:25,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:25,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 04:36:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:25,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:25,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:26,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:26,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:26,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:26,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:36:26,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:26,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:26,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:26,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:26,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:26,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 04:36:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:26,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:26,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:26,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:26,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:26,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:26,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:36:26,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:26,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2020-10-13 04:36:26,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850200238] [2020-10-13 04:36:26,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:26,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:36:26,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209378449] [2020-10-13 04:36:26,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:36:26,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:26,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:36:26,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:36:26,047 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 13 states. [2020-10-13 04:36:26,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:26,177 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2020-10-13 04:36:26,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:36:26,178 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-13 04:36:26,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:26,179 INFO L225 Difference]: With dead ends: 109 [2020-10-13 04:36:26,179 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 04:36:26,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:36:26,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 04:36:26,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 04:36:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 04:36:26,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 04:36:26,185 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 122 [2020-10-13 04:36:26,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:26,186 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 04:36:26,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:36:26,186 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 04:36:26,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 04:36:26,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:26,187 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 10, 10, 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] [2020-10-13 04:36:26,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 04:36:26,187 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:26,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:26,188 INFO L82 PathProgramCache]: Analyzing trace with hash 423942647, now seen corresponding path program 26 times [2020-10-13 04:36:26,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:26,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171979156] [2020-10-13 04:36:26,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:26,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:26,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:26,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:26,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:31,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:31,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 04:36:31,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:36:31,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:36:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 04:36:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:36:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:31,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:31,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:31,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:31,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:31,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:31,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:31,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:31,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:31,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:31,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:31,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:31,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:36:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:31,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:31,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:31,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:31,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:31,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:31,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:36:31,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:31,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:31,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:31,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:31,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:31,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 04:36:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:31,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:31,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:31,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:31,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:31,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:36:31,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:31,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:36:31,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:36:31,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:36:31,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:31,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 04:36:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:31,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:31,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:31,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:31,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:31,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:31,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:36:31,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:31,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 184 proven. 265 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2020-10-13 04:36:31,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171979156] [2020-10-13 04:36:31,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:31,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:36:31,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337750197] [2020-10-13 04:36:31,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:36:31,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:31,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:36:31,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:36:31,434 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 13 states. [2020-10-13 04:36:31,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:31,671 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2020-10-13 04:36:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:36:31,671 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-10-13 04:36:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:31,672 INFO L225 Difference]: With dead ends: 135 [2020-10-13 04:36:31,672 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 04:36:31,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 04:36:31,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 04:36:31,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 04:36:31,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 04:36:31,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 04:36:31,678 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 124 [2020-10-13 04:36:31,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:31,678 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 04:36:31,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:36:31,678 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 04:36:31,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 04:36:31,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:31,679 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 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] [2020-10-13 04:36:31,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 04:36:31,680 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:31,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:31,680 INFO L82 PathProgramCache]: Analyzing trace with hash 618378965, now seen corresponding path program 27 times [2020-10-13 04:36:31,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:31,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975107227] [2020-10-13 04:36:31,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:31,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:31,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:31,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:31,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:36,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:36,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 04:36:36,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:36,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:36:36,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:36,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:36:36,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:36:36,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:36:36,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:36,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:36,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:36,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:36,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:36,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:36,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:36,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:36,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:36,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:36,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:36,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:36,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:36:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:36,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:36,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:36,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:36,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:36,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:36,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:36:36,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:36,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:36,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:36,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:36,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:36,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 04:36:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:36,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:36,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:36,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:36,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:36,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:36,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:36:36,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:36,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:36,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 04:36:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:36,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:36,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:36,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:36,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:36,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:36,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:36:36,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:36,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:36,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:36,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:36,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 04:36:36,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975107227] [2020-10-13 04:36:36,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:36,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:36:36,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096421556] [2020-10-13 04:36:36,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:36:36,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:36,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:36:36,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:36:36,903 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 13 states. [2020-10-13 04:36:36,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:36,988 INFO L93 Difference]: Finished difference Result 140 states and 148 transitions. [2020-10-13 04:36:36,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:36:36,989 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-10-13 04:36:36,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:36,990 INFO L225 Difference]: With dead ends: 140 [2020-10-13 04:36:36,990 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 04:36:36,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:36:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 04:36:36,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 04:36:36,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 04:36:36,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-13 04:36:36,995 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 130 [2020-10-13 04:36:36,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:36,996 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-13 04:36:36,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:36:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-13 04:36:36,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 04:36:36,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:36,997 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:36,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 04:36:36,997 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:36,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:36,998 INFO L82 PathProgramCache]: Analyzing trace with hash 2069899959, now seen corresponding path program 28 times [2020-10-13 04:36:36,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:36,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062312809] [2020-10-13 04:36:36,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:37,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:37,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:37,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:42,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:42,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 04:36:42,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 04:36:42,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:36:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 04:36:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:36:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:42,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:42,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:42,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:42,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:42,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:42,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:42,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:42,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:42,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:42,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:42,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:36:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:42,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:42,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:42,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:42,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:42,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:42,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:36:42,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:42,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:42,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 04:36:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:42,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:42,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:42,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:42,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:42,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:36:42,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:36:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:36:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:36:42,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:42,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 04:36:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:42,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:42,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:42,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:42,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:42,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:42,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:36:42,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:42,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 224 proven. 324 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2020-10-13 04:36:42,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062312809] [2020-10-13 04:36:42,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:42,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:36:42,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412792084] [2020-10-13 04:36:42,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:36:42,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:42,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:36:42,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:36:42,240 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 14 states. [2020-10-13 04:36:42,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:42,503 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2020-10-13 04:36:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:36:42,506 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-13 04:36:42,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:42,507 INFO L225 Difference]: With dead ends: 141 [2020-10-13 04:36:42,507 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 04:36:42,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-13 04:36:42,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 04:36:42,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 04:36:42,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 04:36:42,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-13 04:36:42,516 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 132 [2020-10-13 04:36:42,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:42,517 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-13 04:36:42,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:36:42,517 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-13 04:36:42,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 04:36:42,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:42,518 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:42,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 04:36:42,518 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:42,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:42,519 INFO L82 PathProgramCache]: Analyzing trace with hash 56702869, now seen corresponding path program 29 times [2020-10-13 04:36:42,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:42,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516047840] [2020-10-13 04:36:42,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:42,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:42,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:42,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:47,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:47,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 04:36:47,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:47,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 04:36:47,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:47,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:36:47,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:36:47,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:36:47,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:47,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:47,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:47,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:47,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:47,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:47,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:47,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:47,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:47,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:47,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:36:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:47,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:47,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:47,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:47,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:36:47,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:47,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:36:47,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:36:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:47,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:47,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 04:36:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:47,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:47,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:47,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:47,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:36:47,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:36:47,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:47,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:36:47,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:47,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:47,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 04:36:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:47,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:47,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:47,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:36:47,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:47,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:36:47,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:47,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:47,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:36:47,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:47,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2020-10-13 04:36:47,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516047840] [2020-10-13 04:36:47,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:47,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:36:47,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517324091] [2020-10-13 04:36:47,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:36:47,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:47,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:36:47,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:36:47,793 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 14 states. [2020-10-13 04:36:47,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:47,939 INFO L93 Difference]: Finished difference Result 146 states and 154 transitions. [2020-10-13 04:36:47,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:36:47,940 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 138 [2020-10-13 04:36:47,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:47,941 INFO L225 Difference]: With dead ends: 146 [2020-10-13 04:36:47,941 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 04:36:47,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:36:47,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 04:36:47,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 04:36:47,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 04:36:47,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 04:36:47,947 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 138 [2020-10-13 04:36:47,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:47,948 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 04:36:47,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:36:47,948 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 04:36:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 04:36:47,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:47,949 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:47,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 04:36:47,950 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:47,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:47,950 INFO L82 PathProgramCache]: Analyzing trace with hash 942451063, now seen corresponding path program 30 times [2020-10-13 04:36:47,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:47,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277543274] [2020-10-13 04:36:47,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:47,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:48,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:48,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:48,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:52,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:52,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 04:36:52,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:52,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 04:36:52,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:52,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:36:52,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 04:36:52,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:36:52,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:53,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:53,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:53,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:53,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:53,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:53,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:53,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:53,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:53,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:36:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:53,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:53,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:53,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:53,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:36:53,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:53,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:36:53,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:53,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:53,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:53,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:53,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 04:36:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:53,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:53,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:53,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:53,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:36:53,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:53,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:36:53,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:53,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:53,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:53,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:53,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:53,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 04:36:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:53,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:53,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:53,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:53,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:36:53,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:53,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:36:53,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:53,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:36:53,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:53,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:53,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 04:36:53,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277543274] [2020-10-13 04:36:53,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:53,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:36:53,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554887478] [2020-10-13 04:36:53,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:36:53,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:53,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:36:53,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:36:53,213 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 14 states. [2020-10-13 04:36:53,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:53,354 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2020-10-13 04:36:53,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:36:53,355 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2020-10-13 04:36:53,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:53,356 INFO L225 Difference]: With dead ends: 123 [2020-10-13 04:36:53,356 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 04:36:53,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:36:53,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 04:36:53,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 04:36:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 04:36:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-13 04:36:53,364 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 140 [2020-10-13 04:36:53,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:53,364 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-13 04:36:53,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:36:53,365 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-13 04:36:53,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 04:36:53,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:53,366 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:53,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 04:36:53,366 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:53,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:53,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1521459723, now seen corresponding path program 31 times [2020-10-13 04:36:53,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:53,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96177295] [2020-10-13 04:36:53,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:53,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:53,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:53,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:53,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:58,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:58,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 04:36:58,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:58,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:36:58,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:36:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 04:36:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:36:58,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:58,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:58,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:58,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:58,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:58,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:58,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:36:58,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:58,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:58,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:36:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:58,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:58,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:58,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:36:58,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:58,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:36:58,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:36:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:36:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:36:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:58,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 04:36:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:58,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:58,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:58,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:58,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:36:58,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:58,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:36:58,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:58,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:58,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:36:58,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:58,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:58,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 04:36:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:58,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:58,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:58,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:58,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:36:58,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:36:58,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:36:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2020-10-13 04:36:58,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96177295] [2020-10-13 04:36:58,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:58,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:36:58,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454781788] [2020-10-13 04:36:58,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:36:58,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:58,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:36:58,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:36:58,655 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 15 states. [2020-10-13 04:36:58,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:58,973 INFO L93 Difference]: Finished difference Result 151 states and 161 transitions. [2020-10-13 04:36:58,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:36:58,974 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 142 [2020-10-13 04:36:58,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:58,975 INFO L225 Difference]: With dead ends: 151 [2020-10-13 04:36:58,975 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 04:36:58,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-13 04:36:58,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 04:36:58,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 04:36:58,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 04:36:58,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 04:36:58,981 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 142 [2020-10-13 04:36:58,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:58,981 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 04:36:58,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:36:58,982 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 04:36:58,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 04:36:58,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:58,983 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:36:58,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 04:36:58,983 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:58,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:58,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1929485485, now seen corresponding path program 32 times [2020-10-13 04:36:58,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:58,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983765291] [2020-10-13 04:36:58,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:59,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:59,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:59,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:59,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:04,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 04:37:04,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:04,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 04:37:04,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:04,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:37:04,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 04:37:04,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:37:04,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:04,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:04,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:04,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:04,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:04,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:04,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:04,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:04,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:04,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:04,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:04,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:37:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:04,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:04,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:04,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:04,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 04:37:04,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:04,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:04,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:04,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:04,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:04,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 04:37:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:04,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:04,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:04,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:04,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:37:04,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:04,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:04,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 04:37:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:04,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:04,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:04,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:04,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 04:37:04,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:37:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:04,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1504 trivial. 0 not checked. [2020-10-13 04:37:04,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983765291] [2020-10-13 04:37:04,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:04,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:37:04,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760999774] [2020-10-13 04:37:04,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:37:04,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:04,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:37:04,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:37:04,293 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 15 states. [2020-10-13 04:37:04,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:04,439 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2020-10-13 04:37:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:37:04,439 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-13 04:37:04,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:04,441 INFO L225 Difference]: With dead ends: 129 [2020-10-13 04:37:04,441 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 04:37:04,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:37:04,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 04:37:04,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 04:37:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 04:37:04,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-13 04:37:04,447 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 148 [2020-10-13 04:37:04,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:04,448 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-13 04:37:04,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:37:04,448 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-13 04:37:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 04:37:04,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:04,449 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:04,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 04:37:04,450 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:04,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:04,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1451976495, now seen corresponding path program 33 times [2020-10-13 04:37:04,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:04,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730184356] [2020-10-13 04:37:04,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:04,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:09,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:09,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 04:37:09,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:09,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 04:37:09,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:09,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:37:09,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:37:09,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:37:09,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:09,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:09,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:09,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:09,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:09,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:09,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:09,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:09,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:09,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:09,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:09,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:09,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:37:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:09,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:09,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:09,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:09,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:09,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:09,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:37:09,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:09,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:09,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:37:09,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:09,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:09,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 04:37:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:09,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:09,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:09,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:09,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:09,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:09,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:37:09,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:37:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:09,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:09,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 04:37:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:09,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:09,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:09,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:09,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:09,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:09,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:37:09,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:09,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:09,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:37:09,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:09,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2020-10-13 04:37:09,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730184356] [2020-10-13 04:37:09,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:09,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:37:09,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734489785] [2020-10-13 04:37:09,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:37:09,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:09,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:37:09,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:37:09,737 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 15 states. [2020-10-13 04:37:09,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:09,869 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2020-10-13 04:37:09,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:37:09,870 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-10-13 04:37:09,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:09,871 INFO L225 Difference]: With dead ends: 160 [2020-10-13 04:37:09,871 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 04:37:09,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:37:09,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 04:37:09,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 04:37:09,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 04:37:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 04:37:09,878 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 150 [2020-10-13 04:37:09,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:09,878 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 04:37:09,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:37:09,878 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 04:37:09,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 04:37:09,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:09,880 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 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] [2020-10-13 04:37:09,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 04:37:09,880 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:09,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:09,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1800030131, now seen corresponding path program 34 times [2020-10-13 04:37:09,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:09,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941688100] [2020-10-13 04:37:09,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:09,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:09,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:09,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:10,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:14,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:14,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 04:37:14,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:14,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 04:37:14,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:37:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 04:37:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:37:14,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:15,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:15,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:15,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:15,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:15,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:15,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:37:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:15,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:15,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:15,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:15,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:37:15,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:15,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:15,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:15,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:15,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:15,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 04:37:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:15,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:15,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:15,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:15,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 04:37:15,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:15,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:15,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 04:37:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:15,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:15,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:15,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:15,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 04:37:15,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:37:15,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:15,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2020-10-13 04:37:15,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941688100] [2020-10-13 04:37:15,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:15,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:37:15,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148744516] [2020-10-13 04:37:15,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:37:15,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:15,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:37:15,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:37:15,246 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 16 states. [2020-10-13 04:37:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:15,407 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-10-13 04:37:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:37:15,408 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 152 [2020-10-13 04:37:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:15,408 INFO L225 Difference]: With dead ends: 133 [2020-10-13 04:37:15,409 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 04:37:15,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:37:15,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 04:37:15,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 04:37:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 04:37:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-13 04:37:15,415 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 152 [2020-10-13 04:37:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:15,416 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-13 04:37:15,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:37:15,416 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-13 04:37:15,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 04:37:15,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:15,417 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 13, 13, 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] [2020-10-13 04:37:15,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 04:37:15,418 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:15,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:15,418 INFO L82 PathProgramCache]: Analyzing trace with hash 609805617, now seen corresponding path program 35 times [2020-10-13 04:37:15,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:15,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65526165] [2020-10-13 04:37:15,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:15,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:20,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:20,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 04:37:20,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:20,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 04:37:20,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:20,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:37:20,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 04:37:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:37:20,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:20,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:20,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:20,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:20,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:20,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:20,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:20,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:20,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:20,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:37:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:20,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:20,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:20,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:20,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:20,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:37:20,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:37:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:37:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:37:20,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:20,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 04:37:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:20,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:20,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:20,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:20,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:20,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:20,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 04:37:20,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:20,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:20,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:37:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:20,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:20,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 04:37:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:20,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:20,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:20,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:20,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:20,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:20,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 04:37:20,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:20,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:20,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:37:20,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:20,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:20,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 0 proven. 776 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2020-10-13 04:37:20,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65526165] [2020-10-13 04:37:20,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:20,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:37:20,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980391322] [2020-10-13 04:37:20,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:37:20,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:20,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:37:20,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:37:20,794 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 16 states. [2020-10-13 04:37:21,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:21,167 INFO L93 Difference]: Finished difference Result 165 states and 175 transitions. [2020-10-13 04:37:21,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:37:21,168 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 154 [2020-10-13 04:37:21,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:21,169 INFO L225 Difference]: With dead ends: 165 [2020-10-13 04:37:21,169 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 04:37:21,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-13 04:37:21,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 04:37:21,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-13 04:37:21,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 04:37:21,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 04:37:21,176 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 154 [2020-10-13 04:37:21,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:21,176 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 04:37:21,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:37:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 04:37:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 04:37:21,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:21,178 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 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] [2020-10-13 04:37:21,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 04:37:21,179 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:21,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:21,179 INFO L82 PathProgramCache]: Analyzing trace with hash 394546063, now seen corresponding path program 36 times [2020-10-13 04:37:21,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:21,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487571106] [2020-10-13 04:37:21,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:21,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:21,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:21,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:21,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:26,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 04:37:26,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:26,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 04:37:26,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:37:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:37:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:37:26,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:26,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:26,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:26,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:26,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:26,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:26,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:26,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:26,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:37:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:26,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:26,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:37:26,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:26,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:37:26,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:37:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:26,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:26,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 04:37:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:26,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:26,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:37:26,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:26,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:37:26,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:37:26,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:26,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:26,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 04:37:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:26,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:26,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:37:26,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:26,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:37:26,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:37:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:26,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1927 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-13 04:37:26,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487571106] [2020-10-13 04:37:26,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:26,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:37:26,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640708143] [2020-10-13 04:37:26,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:37:26,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:26,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:37:26,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:37:26,476 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 16 states. [2020-10-13 04:37:26,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:26,590 INFO L93 Difference]: Finished difference Result 170 states and 178 transitions. [2020-10-13 04:37:26,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:37:26,591 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 160 [2020-10-13 04:37:26,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:26,592 INFO L225 Difference]: With dead ends: 170 [2020-10-13 04:37:26,592 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 04:37:26,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:37:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 04:37:26,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 04:37:26,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 04:37:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 04:37:26,598 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 160 [2020-10-13 04:37:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:26,598 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 04:37:26,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:37:26,598 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 04:37:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 04:37:26,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:26,599 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:26,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 04:37:26,600 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:26,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:26,600 INFO L82 PathProgramCache]: Analyzing trace with hash 914245617, now seen corresponding path program 37 times [2020-10-13 04:37:26,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:26,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331213753] [2020-10-13 04:37:26,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:26,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:31,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:31,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 04:37:31,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:31,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:37:31,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:37:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 04:37:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:37:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:31,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:31,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:31,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:31,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:31,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:31,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:31,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:31,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:31,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:31,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:31,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:31,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:37:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:31,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:31,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:31,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:37:31,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:31,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:37:31,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:31,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:37:31,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:37:31,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:37:31,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:31,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 04:37:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:31,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:31,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:31,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:31,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:37:31,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:31,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:37:31,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:37:31,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:31,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:31,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 04:37:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:31,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:31,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:31,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:31,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:37:31,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:31,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:37:31,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:37:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:31,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2020-10-13 04:37:31,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331213753] [2020-10-13 04:37:31,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:31,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:37:31,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760849729] [2020-10-13 04:37:31,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:37:31,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:31,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:37:31,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:37:31,911 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 17 states. [2020-10-13 04:37:32,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:32,274 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2020-10-13 04:37:32,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:37:32,274 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 162 [2020-10-13 04:37:32,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:32,275 INFO L225 Difference]: With dead ends: 171 [2020-10-13 04:37:32,275 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 04:37:32,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-13 04:37:32,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 04:37:32,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 04:37:32,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 04:37:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-13 04:37:32,282 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 162 [2020-10-13 04:37:32,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:32,282 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-13 04:37:32,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:37:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-13 04:37:32,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 04:37:32,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:32,284 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:32,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 04:37:32,285 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:32,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:32,286 INFO L82 PathProgramCache]: Analyzing trace with hash -593961393, now seen corresponding path program 38 times [2020-10-13 04:37:32,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:32,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161755062] [2020-10-13 04:37:32,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:32,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:32,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:32,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:32,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:37,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:37,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 04:37:37,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:37,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:37:37,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:37:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 04:37:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:37:37,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:37,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:37,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:37,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:37,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:37,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:37,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:37,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:37,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:37:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:37,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:37,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:37,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:37,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:37,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:37,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 04:37:37,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:37,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:37,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 04:37:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:37,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:37,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:37,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:37,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:37,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 04:37:37,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:37,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:37,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:37,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:37,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:37,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 04:37:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:37,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:37,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:37,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:37,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:37,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 04:37:37,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:37:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2201 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2032 trivial. 0 not checked. [2020-10-13 04:37:37,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161755062] [2020-10-13 04:37:37,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:37,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:37:37,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897325333] [2020-10-13 04:37:37,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:37:37,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:37,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:37:37,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:37:37,694 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 17 states. [2020-10-13 04:37:37,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:37,895 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2020-10-13 04:37:37,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:37:37,895 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 168 [2020-10-13 04:37:37,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:37,897 INFO L225 Difference]: With dead ends: 145 [2020-10-13 04:37:37,897 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 04:37:37,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:37:37,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 04:37:37,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 04:37:37,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 04:37:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-13 04:37:37,904 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 168 [2020-10-13 04:37:37,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:37,905 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-13 04:37:37,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:37:37,905 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-13 04:37:37,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 04:37:37,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:37,906 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:37,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 04:37:37,907 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:37,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:37,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1305040077, now seen corresponding path program 39 times [2020-10-13 04:37:37,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:37,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898678802] [2020-10-13 04:37:37,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:37,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:37,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:38,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:42,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:42,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 04:37:42,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:42,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 04:37:42,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:42,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:37:42,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:37:42,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:37:42,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:43,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:43,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:43,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:43,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:43,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:43,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:43,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:43,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:43,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:43,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:43,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:37:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:43,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:43,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:43,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:43,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:37:43,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:43,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:43,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:37:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:43,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:43,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 04:37:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:43,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:43,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:43,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:43,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:37:43,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:37:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:43,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:43,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 04:37:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:43,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:43,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:43,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 04:37:43,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:37:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:43,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 04:37:43,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898678802] [2020-10-13 04:37:43,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:43,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:37:43,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376967555] [2020-10-13 04:37:43,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:37:43,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:43,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:37:43,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:37:43,265 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 17 states. [2020-10-13 04:37:43,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:43,412 INFO L93 Difference]: Finished difference Result 180 states and 188 transitions. [2020-10-13 04:37:43,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:37:43,413 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 170 [2020-10-13 04:37:43,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:43,414 INFO L225 Difference]: With dead ends: 180 [2020-10-13 04:37:43,414 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 04:37:43,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:37:43,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 04:37:43,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 04:37:43,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 04:37:43,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-13 04:37:43,422 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 170 [2020-10-13 04:37:43,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:43,422 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-13 04:37:43,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:37:43,422 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-13 04:37:43,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 04:37:43,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:43,424 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:43,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 04:37:43,424 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:43,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:43,424 INFO L82 PathProgramCache]: Analyzing trace with hash -385565009, now seen corresponding path program 40 times [2020-10-13 04:37:43,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:43,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714532019] [2020-10-13 04:37:43,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:43,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:48,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:48,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 04:37:48,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:48,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:37:48,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:37:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 04:37:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:37:48,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:48,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:48,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:48,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:48,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:48,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:48,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:48,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:48,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:48,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:48,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:48,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:48,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:37:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:48,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:48,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:48,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:48,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:48,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:48,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 04:37:48,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:48,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:48,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 04:37:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:48,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:48,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:48,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:48,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:48,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 04:37:48,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:37:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:37:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:37:48,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:48,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 04:37:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:48,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:48,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:48,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:48,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:48,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:48,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 04:37:48,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:48,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:48,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:37:48,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:48,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 424 proven. 620 refuted. 0 times theorem prover too weak. 1211 trivial. 0 not checked. [2020-10-13 04:37:48,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714532019] [2020-10-13 04:37:48,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:48,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:37:48,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024192204] [2020-10-13 04:37:48,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:37:48,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:48,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:37:48,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:37:48,823 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 18 states. [2020-10-13 04:37:49,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:49,253 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2020-10-13 04:37:49,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:37:49,254 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2020-10-13 04:37:49,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:49,255 INFO L225 Difference]: With dead ends: 181 [2020-10-13 04:37:49,256 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 04:37:49,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 04:37:49,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 04:37:49,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-13 04:37:49,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 04:37:49,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-13 04:37:49,264 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 172 [2020-10-13 04:37:49,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:49,264 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-13 04:37:49,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:37:49,265 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-13 04:37:49,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 04:37:49,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:49,266 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:49,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 04:37:49,267 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:49,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:49,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1649480307, now seen corresponding path program 41 times [2020-10-13 04:37:49,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:49,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88199374] [2020-10-13 04:37:49,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:49,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:54,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:54,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 04:37:54,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:54,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:37:54,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:37:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-13 04:37:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:37:54,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:54,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:54,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:54,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:54,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:54,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:54,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:54,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:54,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:54,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:37:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:54,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:54,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:54,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:54,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:37:54,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:54,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 04:37:54,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:54,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:54,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 04:37:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:54,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:54,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:54,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:37:54,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:54,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-13 04:37:54,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:54,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:54,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:54,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:54,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:37:54,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 04:37:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:54,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:54,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:54,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:54,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:37:54,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:54,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-13 04:37:54,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:37:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:54,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2522 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2326 trivial. 0 not checked. [2020-10-13 04:37:54,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88199374] [2020-10-13 04:37:54,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:54,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:37:54,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023231825] [2020-10-13 04:37:54,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:37:54,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:54,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:37:54,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:37:54,856 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 18 states. [2020-10-13 04:37:55,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:55,022 INFO L93 Difference]: Finished difference Result 153 states and 158 transitions. [2020-10-13 04:37:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:37:55,023 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 178 [2020-10-13 04:37:55,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:55,025 INFO L225 Difference]: With dead ends: 153 [2020-10-13 04:37:55,025 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 04:37:55,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:37:55,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 04:37:55,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-13 04:37:55,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 04:37:55,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-13 04:37:55,036 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 178 [2020-10-13 04:37:55,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:55,037 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-13 04:37:55,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:37:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-13 04:37:55,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 04:37:55,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:55,039 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:37:55,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 04:37:55,040 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:55,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:55,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1194071179, now seen corresponding path program 42 times [2020-10-13 04:37:55,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:55,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323959335] [2020-10-13 04:37:55,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:55,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:55,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:55,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:55,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:00,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 04:38:00,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:38:00,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 04:38:00,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:00,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:38:00,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:38:00,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:38:00,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:00,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:38:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:00,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:00,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:38:00,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:38:00,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:38:00,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:00,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:00,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:38:00,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:00,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:00,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:38:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:00,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:00,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:00,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 04:38:00,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:00,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 04:38:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:00,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:00,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:00,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:00,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 04:38:00,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:00,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:00,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:00,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:00,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:00,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 04:38:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:00,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:00,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:00,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:00,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 04:38:00,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:00,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:00,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:00,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:00,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-13 04:38:00,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323959335] [2020-10-13 04:38:00,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:38:00,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:38:00,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996576713] [2020-10-13 04:38:00,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:38:00,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:38:00,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:38:00,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:38:00,493 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 18 states. [2020-10-13 04:38:00,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:38:00,630 INFO L93 Difference]: Finished difference Result 190 states and 198 transitions. [2020-10-13 04:38:00,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:38:00,630 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 180 [2020-10-13 04:38:00,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:38:00,631 INFO L225 Difference]: With dead ends: 190 [2020-10-13 04:38:00,632 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 04:38:00,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:38:00,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 04:38:00,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-13 04:38:00,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 04:38:00,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-10-13 04:38:00,638 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 180 [2020-10-13 04:38:00,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:38:00,639 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-10-13 04:38:00,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:38:00,639 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-10-13 04:38:00,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 04:38:00,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:38:00,641 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 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] [2020-10-13 04:38:00,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 04:38:00,641 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:38:00,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:38:00,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1814164499, now seen corresponding path program 43 times [2020-10-13 04:38:00,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:38:00,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013271661] [2020-10-13 04:38:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:38:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:00,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:01,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:05,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:05,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 04:38:05,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:38:05,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 04:38:05,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 04:38:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 04:38:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 04:38:05,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:05,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:38:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:05,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:05,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:05,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:38:05,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:38:05,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:38:05,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:38:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:05,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:05,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:38:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:05,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:05,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:05,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:05,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:05,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:05,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 04:38:05,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:05,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:38:05,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:05,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:05,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 04:38:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:05,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:05,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:06,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:06,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:06,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 04:38:06,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:38:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:06,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:06,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 04:38:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:06,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:06,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:06,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:06,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 04:38:06,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:06,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-13 04:38:06,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013271661] [2020-10-13 04:38:06,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:38:06,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 04:38:06,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449771474] [2020-10-13 04:38:06,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 04:38:06,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:38:06,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 04:38:06,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:38:06,162 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand 19 states. [2020-10-13 04:38:06,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:38:06,346 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2020-10-13 04:38:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 04:38:06,346 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 182 [2020-10-13 04:38:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:38:06,348 INFO L225 Difference]: With dead ends: 157 [2020-10-13 04:38:06,348 INFO L226 Difference]: Without dead ends: 116 [2020-10-13 04:38:06,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:38:06,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-13 04:38:06,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-13 04:38:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 04:38:06,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2020-10-13 04:38:06,354 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 182 [2020-10-13 04:38:06,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:38:06,354 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2020-10-13 04:38:06,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 04:38:06,355 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2020-10-13 04:38:06,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 04:38:06,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:38:06,356 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 16, 16, 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] [2020-10-13 04:38:06,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 04:38:06,357 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:38:06,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:38:06,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1846352619, now seen corresponding path program 44 times [2020-10-13 04:38:06,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:38:06,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612058224] [2020-10-13 04:38:06,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:38:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:06,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:07,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking...