/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/xor3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 04:34:10,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 04:34:10,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 04:34:10,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 04:34:10,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 04:34:10,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 04:34:10,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 04:34:10,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 04:34:10,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 04:34:10,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 04:34:10,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 04:34:10,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 04:34:10,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 04:34:10,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 04:34:10,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 04:34:10,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 04:34:10,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 04:34:10,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 04:34:10,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 04:34:10,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 04:34:10,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 04:34:10,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 04:34:10,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 04:34:10,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 04:34:10,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 04:34:10,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 04:34:10,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 04:34:10,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 04:34:10,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 04:34:10,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 04:34:10,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 04:34:10,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 04:34:10,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 04:34:10,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 04:34:10,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 04:34:10,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 04:34:10,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 04:34:10,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 04:34:10,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 04:34:10,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 04:34:10,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 04:34:10,129 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 04:34:10,152 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 04:34:10,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 04:34:10,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 04:34:10,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 04:34:10,154 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 04:34:10,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 04:34:10,154 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 04:34:10,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 04:34:10,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 04:34:10,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 04:34:10,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 04:34:10,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 04:34:10,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 04:34:10,158 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 04:34:10,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 04:34:10,159 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 04:34:10,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 04:34:10,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 04:34:10,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 04:34:10,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 04:34:10,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 04:34:10,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 04:34:10,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 04:34:10,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 04:34:10,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 04:34:10,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 04:34:10,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 04:34:10,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 04:34:10,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 04:34:10,165 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 04:34:10,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 04:34:10,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 04:34:10,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 04:34:10,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 04:34:10,500 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 04:34:10,501 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor3.i [2020-10-13 04:34:10,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc6ba6c63/8cd6c46782b94ae39ef7b6ffbbe04f01/FLAG06fb9c0fe [2020-10-13 04:34:10,991 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 04:34:10,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/xor3.i [2020-10-13 04:34:10,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc6ba6c63/8cd6c46782b94ae39ef7b6ffbbe04f01/FLAG06fb9c0fe [2020-10-13 04:34:11,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc6ba6c63/8cd6c46782b94ae39ef7b6ffbbe04f01 [2020-10-13 04:34:11,385 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 04:34:11,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 04:34:11,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 04:34:11,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 04:34:11,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 04:34:11,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:34:11" (1/1) ... [2020-10-13 04:34:11,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:11, skipping insertion in model container [2020-10-13 04:34:11,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:34:11" (1/1) ... [2020-10-13 04:34:11,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 04:34:11,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 04:34:11,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:34:11,615 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 04:34:11,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:34:11,654 INFO L208 MainTranslator]: Completed translation [2020-10-13 04:34:11,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:11 WrapperNode [2020-10-13 04:34:11,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 04:34:11,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 04:34:11,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 04:34:11,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 04:34:11,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:11" (1/1) ... [2020-10-13 04:34:11,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:11" (1/1) ... [2020-10-13 04:34:11,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:11" (1/1) ... [2020-10-13 04:34:11,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:11" (1/1) ... [2020-10-13 04:34:11,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:11" (1/1) ... [2020-10-13 04:34:11,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:11" (1/1) ... [2020-10-13 04:34:11,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:11" (1/1) ... [2020-10-13 04:34:11,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 04:34:11,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 04:34:11,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 04:34:11,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 04:34:11,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:11" (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 04:34:11,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 04:34:11,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 04:34:11,864 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2020-10-13 04:34:11,864 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 04:34:11,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 04:34:11,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 04:34:11,864 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2020-10-13 04:34:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 04:34:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 04:34:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 04:34:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 04:34:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 04:34:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 04:34:11,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 04:34:12,126 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 04:34:12,127 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 04:34:12,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:34:12 BoogieIcfgContainer [2020-10-13 04:34:12,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 04:34:12,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 04:34:12,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 04:34:12,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 04:34:12,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:34:11" (1/3) ... [2020-10-13 04:34:12,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b00cef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:34:12, skipping insertion in model container [2020-10-13 04:34:12,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:34:11" (2/3) ... [2020-10-13 04:34:12,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b00cef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:34:12, skipping insertion in model container [2020-10-13 04:34:12,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:34:12" (3/3) ... [2020-10-13 04:34:12,140 INFO L109 eAbstractionObserver]: Analyzing ICFG xor3.i [2020-10-13 04:34:12,151 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 04:34:12,158 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 04:34:12,173 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 04:34:12,199 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 04:34:12,200 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 04:34:12,200 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 04:34:12,200 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 04:34:12,200 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 04:34:12,200 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 04:34:12,201 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 04:34:12,201 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 04:34:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 04:34:12,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 04:34:12,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:12,228 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 04:34:12,228 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:12,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:12,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1461178031, now seen corresponding path program 1 times [2020-10-13 04:34:12,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:12,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354020387] [2020-10-13 04:34:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:12,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:12,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:12,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:12,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:12,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:12,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:12,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 04:34:12,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:12,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-13 04:34:12,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:34:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:12,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 04:34:12,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:12,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:12,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:12,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:12,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:12,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:34:12,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:12,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:12,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:12,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 04:34:12,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:34:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:12,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:12,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:12,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:12,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:12,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:12,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:34:12,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:12,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:12,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:12,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:12,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 04:34:12,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 04:34:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:12,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:12,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:12,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:12,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:12,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:12,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:34:12,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:12,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:12,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:34:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:12,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:12,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:13,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:13,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:13,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:13,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:34:13,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:13,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:34:13,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:13,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:13,044 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 04:34:13,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354020387] [2020-10-13 04:34:13,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:34:13,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 04:34:13,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672735492] [2020-10-13 04:34:13,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 04:34:13,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:13,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 04:34:13,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:34:13,077 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 04:34:13,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:13,250 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 04:34:13,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 04:34:13,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 04:34:13,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:13,263 INFO L225 Difference]: With dead ends: 54 [2020-10-13 04:34:13,264 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 04:34:13,270 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 04:34:13,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 04:34:13,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 04:34:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 04:34:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 04:34:13,355 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 04:34:13,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:13,356 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 04:34:13,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 04:34:13,356 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 04:34:13,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 04:34:13,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:13,359 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 04:34:13,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 04:34:13,360 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:13,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:13,361 INFO L82 PathProgramCache]: Analyzing trace with hash -595992629, now seen corresponding path program 1 times [2020-10-13 04:34:13,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:13,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167372960] [2020-10-13 04:34:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:13,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:13,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:13,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:13,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:13,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:14,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 04:34:14,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:14,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 812 [2020-10-13 04:34:14,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:34:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 04:34:14,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:34:14,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:14,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:14,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:14,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:14,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:14,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:34:14,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:14,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:14,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:14,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:14,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:14,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:34:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:14,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:14,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:14,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:14,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:34:14,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:14,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:34:14,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:34:14,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:34:14,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:14,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 04:34:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:14,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:14,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:14,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:14,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:34:14,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:34:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:14,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:14,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:34:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:14,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:14,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:34:14,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:14,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:34:14,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:14,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:14,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:34:14,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:14,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:14,299 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 04:34:14,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167372960] [2020-10-13 04:34:14,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:14,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 04:34:14,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295737813] [2020-10-13 04:34:14,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:34:14,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:14,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:34:14,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:34:14,304 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 04:34:14,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:14,426 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-13 04:34:14,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:34:14,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 04:34:14,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:14,428 INFO L225 Difference]: With dead ends: 45 [2020-10-13 04:34:14,428 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 04:34:14,430 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 04:34:14,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 04:34:14,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 04:34:14,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 04:34:14,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 04:34:14,439 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 04:34:14,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:14,439 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 04:34:14,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:34:14,440 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 04:34:14,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 04:34:14,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:14,442 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 04:34:14,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 04:34:14,443 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:14,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:14,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1309759401, now seen corresponding path program 1 times [2020-10-13 04:34:14,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:14,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171765664] [2020-10-13 04:34:14,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:14,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:16,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 04:34:16,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:16,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2222 [2020-10-13 04:34:16,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:16,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:34:16,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 04:34:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:34:16,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:16,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:16,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:16,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:16,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:16,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:34:16,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:16,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:16,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:16,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:16,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:16,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:34:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:16,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:16,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:16,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:16,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:34:16,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:16,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:16,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:16,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:16,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:16,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 04:34:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:16,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:16,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:16,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:16,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:34:16,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:16,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:16,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:34:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:16,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:16,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:16,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:16,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:34:16,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:16,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:16,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:16,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:16,792 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 04:34:16,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171765664] [2020-10-13 04:34:16,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:34:16,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:34:16,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797025897] [2020-10-13 04:34:16,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:34:16,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:16,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:34:16,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:34:16,795 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 04:34:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:16,871 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-13 04:34:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:34:16,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 04:34:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:16,873 INFO L225 Difference]: With dead ends: 42 [2020-10-13 04:34:16,873 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 04:34:16,874 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 04:34:16,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 04:34:16,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 04:34:16,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 04:34:16,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 04:34:16,881 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-13 04:34:16,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:16,884 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 04:34:16,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:34:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 04:34:16,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 04:34:16,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:16,886 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 04:34:16,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 04:34:16,886 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:16,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:16,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1209333671, now seen corresponding path program 1 times [2020-10-13 04:34:16,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:16,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256876041] [2020-10-13 04:34:16,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:16,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:16,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:17,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:20,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:20,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 04:34:20,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:20,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3249 [2020-10-13 04:34:20,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:34:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:34:20,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:20,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:20,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:20,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:20,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:20,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:20,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:34:20,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:20,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:20,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:20,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:20,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:34:20,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:34:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:20,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:20,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:20,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:20,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:20,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:20,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:34:20,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:20,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:20,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 04:34:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:20,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:20,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:20,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:20,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:20,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:20,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:34:20,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:20,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:20,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:20,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:20,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:20,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:34:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:20,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:20,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:20,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:20,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:20,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:20,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:34:20,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:20,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:20,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:20,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:20,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:20,269 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 04:34:20,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256876041] [2020-10-13 04:34:20,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:34:20,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:34:20,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018555864] [2020-10-13 04:34:20,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:34:20,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:20,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:34:20,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:34:20,273 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 04:34:20,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:20,361 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-13 04:34:20,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:34:20,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 04:34:20,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:20,363 INFO L225 Difference]: With dead ends: 50 [2020-10-13 04:34:20,363 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 04:34:20,363 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 04:34:20,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 04:34:20,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 04:34:20,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 04:34:20,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 04:34:20,376 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 04:34:20,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:20,376 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 04:34:20,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:34:20,377 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 04:34:20,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 04:34:20,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:20,378 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 04:34:20,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 04:34:20,379 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:20,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:20,379 INFO L82 PathProgramCache]: Analyzing trace with hash -233991671, now seen corresponding path program 1 times [2020-10-13 04:34:20,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:20,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117945156] [2020-10-13 04:34:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:20,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:20,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:20,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:20,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:20,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:25,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:25,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 04:34:25,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:25,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4899 [2020-10-13 04:34:25,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:25,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:34:25,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:34:25,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:34:25,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:25,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:25,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:25,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:25,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:25,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:25,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:25,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:25,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:25,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:25,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:25,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:25,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:34:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:25,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:25,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:25,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:25,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:25,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:34:25,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:25,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:25,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 04:34:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:25,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:25,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:25,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:25,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:25,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:34:25,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:25,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:34:25,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:34:25,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:34:25,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:25,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:34:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:25,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:25,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:25,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:25,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:34:25,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:25,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:34:25,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:25,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:34:25,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:25,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 04:34:25,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117945156] [2020-10-13 04:34:25,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:25,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:34:25,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72861369] [2020-10-13 04:34:25,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:34:25,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:25,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:34:25,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:34:25,395 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 04:34:25,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:25,513 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-13 04:34:25,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:34:25,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 04:34:25,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:25,514 INFO L225 Difference]: With dead ends: 51 [2020-10-13 04:34:25,515 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 04:34:25,515 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 04:34:25,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 04:34:25,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 04:34:25,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 04:34:25,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 04:34:25,527 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 04:34:25,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:25,527 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 04:34:25,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:34:25,527 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 04:34:25,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 04:34:25,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:25,529 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 04:34:25,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 04:34:25,529 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:25,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:25,530 INFO L82 PathProgramCache]: Analyzing trace with hash -571391385, now seen corresponding path program 2 times [2020-10-13 04:34:25,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:25,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221929830] [2020-10-13 04:34:25,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:25,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:25,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:25,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:26,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:30,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:30,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 04:34:30,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:34:30,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:34:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 04:34:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:34:30,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:30,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:30,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:30,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:30,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:30,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:30,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:30,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:30,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:30,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:34:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:30,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:30,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:30,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:30,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:30,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:30,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:34:30,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:30,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:30,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:30,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:34:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:30,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:30,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:30,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:30,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:30,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:30,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:34:30,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:30,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:30,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:30,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:30,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:34:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:30,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:30,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:30,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:30,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:30,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:30,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:34:30,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:30,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:30,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:30,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:30,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:30,645 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 04:34:30,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221929830] [2020-10-13 04:34:30,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:30,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:34:30,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30618660] [2020-10-13 04:34:30,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:34:30,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:30,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:34:30,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:34:30,649 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-13 04:34:30,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:30,739 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-10-13 04:34:30,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:34:30,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-13 04:34:30,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:30,741 INFO L225 Difference]: With dead ends: 49 [2020-10-13 04:34:30,741 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 04:34:30,742 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 04:34:30,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 04:34:30,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 04:34:30,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 04:34:30,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 04:34:30,753 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2020-10-13 04:34:30,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:30,753 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 04:34:30,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:34:30,754 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 04:34:30,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 04:34:30,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:30,757 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 04:34:30,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 04:34:30,758 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:30,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:30,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1922216677, now seen corresponding path program 3 times [2020-10-13 04:34:30,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:30,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203096546] [2020-10-13 04:34:30,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:30,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:30,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:30,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:30,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:31,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:35,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:35,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 04:34:35,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:35,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:34:35,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:35,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:34:35,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:35,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:34:35,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:35,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:35,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:35,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:35,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:35,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:35,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:35,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:35,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:35,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:35,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:35,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:35,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:34:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:35,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:35,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:35,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:35,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:35,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:34:35,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:35,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:35,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:35,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:35,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:35,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:34:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:35,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:35,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:35,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:35,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:35,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:35,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:34:35,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:35,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:35,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:34:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:35,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:35,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:35,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:35,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:35,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:35,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:34:35,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:35,858 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 04:34:35,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203096546] [2020-10-13 04:34:35,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:35,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:34:35,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907472471] [2020-10-13 04:34:35,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:34:35,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:35,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:34:35,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:34:35,862 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 04:34:35,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:35,958 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-13 04:34:35,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:34:35,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-13 04:34:35,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:35,960 INFO L225 Difference]: With dead ends: 60 [2020-10-13 04:34:35,960 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 04:34:35,960 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 04:34:35,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 04:34:35,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 04:34:35,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 04:34:35,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 04:34:35,975 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2020-10-13 04:34:35,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:35,975 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 04:34:35,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:34:35,975 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 04:34:35,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 04:34:35,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:35,979 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 04:34:35,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 04:34:35,979 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:35,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:35,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1717617977, now seen corresponding path program 4 times [2020-10-13 04:34:35,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:35,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334710092] [2020-10-13 04:34:35,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:35,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:36,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:36,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:40,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:40,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 04:34:40,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:40,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:34:40,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:34:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:34:40,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:41,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:41,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:41,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:41,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:41,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:41,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:41,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:41,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:41,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:41,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:41,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:41,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:34:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:41,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:41,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:41,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:41,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:41,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:41,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:34:41,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:41,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:41,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:41,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:41,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:41,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 04:34:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:41,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:41,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:41,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:41,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:41,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:41,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:34:41,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:41,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:41,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:41,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:41,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:34:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:41,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:41,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:41,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:41,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:41,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:41,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:34:41,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:41,099 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 04:34:41,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334710092] [2020-10-13 04:34:41,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:41,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:34:41,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63285942] [2020-10-13 04:34:41,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:34:41,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:41,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:34:41,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:34:41,102 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 04:34:41,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:41,196 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-13 04:34:41,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:34:41,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 04:34:41,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:41,198 INFO L225 Difference]: With dead ends: 62 [2020-10-13 04:34:41,198 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 04:34:41,198 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 04:34:41,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 04:34:41,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 04:34:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 04:34:41,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 04:34:41,209 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-13 04:34:41,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:41,209 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 04:34:41,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:34:41,209 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 04:34:41,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 04:34:41,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:41,212 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 04:34:41,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 04:34:41,216 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:41,216 INFO L82 PathProgramCache]: Analyzing trace with hash 799625769, now seen corresponding path program 5 times [2020-10-13 04:34:41,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:41,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734055713] [2020-10-13 04:34:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:41,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:41,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:41,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:41,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:46,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:46,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 04:34:46,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:46,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:34:46,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:46,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:34:46,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 04:34:46,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:34:46,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:46,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:46,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:46,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:46,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:46,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:46,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:46,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:46,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:46,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:34:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:46,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:46,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:46,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:46,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:46,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:46,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:34:46,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:46,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:46,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 04:34:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:46,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:46,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:46,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:46,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:46,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:34:46,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:46,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:46,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 04:34:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:46,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:46,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:46,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:34:46,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:34:46,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:34:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:34:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:34:46,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 04:34:46,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734055713] [2020-10-13 04:34:46,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:46,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:34:46,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849044782] [2020-10-13 04:34:46,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:34:46,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:46,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:34:46,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:34:46,329 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-13 04:34:46,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:46,432 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-13 04:34:46,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:34:46,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-13 04:34:46,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:46,434 INFO L225 Difference]: With dead ends: 63 [2020-10-13 04:34:46,434 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 04:34:46,434 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 04:34:46,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 04:34:46,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 04:34:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 04:34:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 04:34:46,440 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 54 [2020-10-13 04:34:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:46,441 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 04:34:46,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:34:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 04:34:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 04:34:46,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:46,442 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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 04:34:46,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 04:34:46,443 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:46,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:46,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1131907463, now seen corresponding path program 6 times [2020-10-13 04:34:46,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:46,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679334886] [2020-10-13 04:34:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:46,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:46,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:46,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:49,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:51,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:51,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 04:34:51,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:51,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:34:51,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:34:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 04:34:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:34:51,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:51,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:51,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:51,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:51,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:51,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:51,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:51,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:51,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:51,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:51,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:51,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:51,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:34:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:51,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:51,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:51,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:51,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:51,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:51,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:34:51,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:51,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:51,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 04:34:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:51,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:51,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:51,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:51,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:51,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:51,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:34:51,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:51,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:51,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:51,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:51,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 04:34:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:51,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:51,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:51,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:51,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:51,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:51,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:34:51,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:51,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:51,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:34:51,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:51,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 04:34:51,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679334886] [2020-10-13 04:34:51,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:51,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:34:51,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294496620] [2020-10-13 04:34:51,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:34:51,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:51,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:34:51,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:34:51,563 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2020-10-13 04:34:51,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:51,628 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-10-13 04:34:51,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:34:51,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-13 04:34:51,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:51,629 INFO L225 Difference]: With dead ends: 59 [2020-10-13 04:34:51,629 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 04:34:51,630 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 04:34:51,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 04:34:51,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 04:34:51,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 04:34:51,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 04:34:51,643 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-13 04:34:51,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:51,643 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 04:34:51,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:34:51,643 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 04:34:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 04:34:51,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:51,644 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 04:34:51,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 04:34:51,644 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:51,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:51,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1655752187, now seen corresponding path program 7 times [2020-10-13 04:34:51,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:51,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85061260] [2020-10-13 04:34:51,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:51,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:51,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:51,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:51,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:55,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:56,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:56,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 04:34:56,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:34:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:34:56,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:34:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 04:34:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:34:56,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:56,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:56,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:56,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:56,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:56,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:56,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:56,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:56,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:56,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:56,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:56,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:56,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:34:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:56,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:56,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:56,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:56,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:56,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:56,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:34:56,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:56,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:56,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 04:34:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:56,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:56,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:56,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:56,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:56,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:56,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:34:56,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:56,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:56,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:34:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:56,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:56,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:34:56,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:56,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:34:56,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:34:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:34:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:34:56,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:56,754 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 04:34:56,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85061260] [2020-10-13 04:34:56,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:56,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:34:56,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052165425] [2020-10-13 04:34:56,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:34:56,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:56,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:34:56,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:34:56,756 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 04:34:56,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:56,873 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-10-13 04:34:56,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:34:56,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-13 04:34:56,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:56,874 INFO L225 Difference]: With dead ends: 71 [2020-10-13 04:34:56,874 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 04:34:56,875 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 04:34:56,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 04:34:56,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 04:34:56,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 04:34:56,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 04:34:56,880 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-13 04:34:56,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:56,881 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 04:34:56,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:34:56,881 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 04:34:56,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 04:34:56,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:56,882 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 04:34:56,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 04:34:56,882 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:56,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:56,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1001257827, now seen corresponding path program 8 times [2020-10-13 04:34:56,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:56,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10074413] [2020-10-13 04:34:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:56,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:56,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:56,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:56,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:01,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:01,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 04:35:01,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:01,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:35:01,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:01,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:35:01,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 04:35:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:35:01,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:01,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:01,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:01,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:01,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:01,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:01,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:01,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:01,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:01,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:01,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:01,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:35:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:01,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:01,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:01,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:01,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:01,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:01,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:35:01,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:01,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:01,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 04:35:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:01,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:01,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:01,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:01,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:01,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:35:01,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:01,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:01,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 04:35:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:01,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:01,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:01,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:01,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:01,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:01,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:35:01,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:35:01,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:01,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:01,982 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 04:35:01,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10074413] [2020-10-13 04:35:01,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:01,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:35:01,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117903897] [2020-10-13 04:35:01,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:35:01,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:01,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:35:01,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:35:01,984 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 7 states. [2020-10-13 04:35:02,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:02,071 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-10-13 04:35:02,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:35:02,071 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-13 04:35:02,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:02,072 INFO L225 Difference]: With dead ends: 65 [2020-10-13 04:35:02,072 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 04:35:02,073 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 04:35:02,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 04:35:02,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 04:35:02,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 04:35:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 04:35:02,078 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-13 04:35:02,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:02,078 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 04:35:02,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:35:02,078 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 04:35:02,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 04:35:02,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:02,079 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 04:35:02,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 04:35:02,080 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:02,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:02,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1298518815, now seen corresponding path program 9 times [2020-10-13 04:35:02,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:02,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759453225] [2020-10-13 04:35:02,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:02,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:02,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:02,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:02,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:07,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:07,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 04:35:07,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:07,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:35:07,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:07,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:35:07,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:35:07,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:35:07,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:07,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:07,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:07,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:07,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:07,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:07,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:07,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:07,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:07,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:35:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:07,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:07,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:07,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:07,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:07,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:07,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:35:07,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:35:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:07,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:07,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 04:35:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:07,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:07,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:07,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:07,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:07,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:07,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:35:07,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:07,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:07,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:35:07,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:07,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:07,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 04:35:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:07,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:07,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:07,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:07,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:07,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:07,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:35:07,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:07,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:07,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:35:07,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:07,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:07,199 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 04:35:07,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759453225] [2020-10-13 04:35:07,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:07,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:35:07,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370675141] [2020-10-13 04:35:07,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:35:07,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:07,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:35:07,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:35:07,201 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-13 04:35:07,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:07,285 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-10-13 04:35:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:35:07,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-13 04:35:07,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:07,287 INFO L225 Difference]: With dead ends: 80 [2020-10-13 04:35:07,287 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 04:35:07,288 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 04:35:07,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 04:35:07,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 04:35:07,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 04:35:07,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 04:35:07,294 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-13 04:35:07,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:07,294 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 04:35:07,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:35:07,294 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 04:35:07,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 04:35:07,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:07,295 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 04:35:07,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 04:35:07,295 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:07,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:07,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1541017661, now seen corresponding path program 10 times [2020-10-13 04:35:07,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:07,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777664996] [2020-10-13 04:35:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:07,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:07,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:07,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:07,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:12,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:12,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 04:35:12,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:12,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 04:35:12,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:35:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 04:35:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:35:12,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:12,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:12,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:12,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:12,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:12,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:12,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:35:12,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:12,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:12,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:12,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:12,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:12,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:35:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:12,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:12,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:12,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:12,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:12,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:35:12,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:12,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:35:12,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:35:12,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:35:12,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:12,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:35:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:12,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:12,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:12,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:12,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:12,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:35:12,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:35:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:12,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:35:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:12,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:12,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:12,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:12,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:35:12,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:12,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:35:12,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:12,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:12,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:35:12,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:12,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:12,407 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 04:35:12,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777664996] [2020-10-13 04:35:12,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:12,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:35:12,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160334055] [2020-10-13 04:35:12,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:35:12,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:12,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:35:12,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:35:12,409 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-13 04:35:12,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:12,550 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-13 04:35:12,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:35:12,551 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-13 04:35:12,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:12,552 INFO L225 Difference]: With dead ends: 81 [2020-10-13 04:35:12,552 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 04:35:12,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:35:12,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 04:35:12,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 04:35:12,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 04:35:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 04:35:12,567 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 72 [2020-10-13 04:35:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:12,568 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 04:35:12,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:35:12,568 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 04:35:12,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 04:35:12,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:12,568 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 04:35:12,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 04:35:12,569 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:12,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:12,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1836873311, now seen corresponding path program 11 times [2020-10-13 04:35:12,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:12,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839427736] [2020-10-13 04:35:12,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:12,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:12,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:12,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:12,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:17,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:17,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 04:35:17,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:17,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:35:17,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:17,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:35:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-13 04:35:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:35:17,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:17,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:17,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:17,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:17,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:17,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:17,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:17,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:17,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:17,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:17,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:17,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:35:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:17,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:17,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:17,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:17,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:17,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:17,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:35:17,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:17,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:17,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 04:35:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:17,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:17,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:17,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:17,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:17,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:17,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:35:17,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:17,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:17,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:35:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:17,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:17,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:17,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:17,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:17,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:17,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:35:17,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:17,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:17,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:17,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:17,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:17,673 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 04:35:17,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839427736] [2020-10-13 04:35:17,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:17,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:35:17,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116853446] [2020-10-13 04:35:17,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:35:17,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:17,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:35:17,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:35:17,674 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 04:35:17,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:17,769 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2020-10-13 04:35:17,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:35:17,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-13 04:35:17,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:17,771 INFO L225 Difference]: With dead ends: 73 [2020-10-13 04:35:17,771 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 04:35:17,772 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 04:35:17,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 04:35:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 04:35:17,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 04:35:17,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 04:35:17,779 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2020-10-13 04:35:17,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:17,779 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 04:35:17,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:35:17,779 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 04:35:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 04:35:17,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:17,780 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 04:35:17,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 04:35:17,780 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:17,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:17,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1726786463, now seen corresponding path program 12 times [2020-10-13 04:35:17,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:17,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451646162] [2020-10-13 04:35:17,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:17,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:17,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:17,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:17,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:22,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:22,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 04:35:22,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:22,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:35:22,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:35:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:35:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:35:22,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:22,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:22,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:22,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:22,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:22,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:22,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:22,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:22,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:22,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:35:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:22,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:22,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:22,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:22,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:22,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:35:22,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:22,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:22,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:22,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:22,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 04:35:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:22,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:22,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:22,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:22,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:22,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:22,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:35:22,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:22,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 04:35:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:22,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:22,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:22,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:22,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:22,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:22,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:35:22,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:22,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:22,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:22,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:22,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:35:22,943 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 04:35:22,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451646162] [2020-10-13 04:35:22,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:22,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:35:22,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906306291] [2020-10-13 04:35:22,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:35:22,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:22,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:35:22,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:35:22,952 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 8 states. [2020-10-13 04:35:23,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:23,075 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2020-10-13 04:35:23,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:35:23,076 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-13 04:35:23,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:23,077 INFO L225 Difference]: With dead ends: 90 [2020-10-13 04:35:23,077 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 04:35:23,078 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 04:35:23,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 04:35:23,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 04:35:23,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 04:35:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 04:35:23,097 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-13 04:35:23,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:23,097 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 04:35:23,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:35:23,098 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 04:35:23,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 04:35:23,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:23,101 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 04:35:23,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 04:35:23,110 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:23,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:23,111 INFO L82 PathProgramCache]: Analyzing trace with hash -401359871, now seen corresponding path program 13 times [2020-10-13 04:35:23,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:23,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396458366] [2020-10-13 04:35:23,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:23,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:23,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:23,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:28,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:28,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 04:35:28,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:28,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:35:28,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:28,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:35:28,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 04:35:28,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:35:28,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:28,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:28,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:28,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:28,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:28,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:28,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:28,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:28,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:28,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:28,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:28,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:28,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:35:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:28,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:28,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:28,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:28,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:28,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:28,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:35:28,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:28,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:28,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:28,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:28,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:28,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 04:35:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:28,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:28,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:28,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:28,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:28,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:35:28,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:28,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:35:28,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:35:28,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:35:28,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:28,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 04:35:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:28,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:28,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:28,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:28,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:35:28,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:28,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:35:28,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:28,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:28,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:35:28,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:28,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:35:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 64 proven. 89 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-13 04:35:28,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396458366] [2020-10-13 04:35:28,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:28,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:35:28,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905450813] [2020-10-13 04:35:28,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:35:28,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:28,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:35:28,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:35:28,326 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 9 states. [2020-10-13 04:35:28,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:28,530 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-10-13 04:35:28,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:35:28,530 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-13 04:35:28,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:28,532 INFO L225 Difference]: With dead ends: 91 [2020-10-13 04:35:28,532 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 04:35:28,535 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 04:35:28,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 04:35:28,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 04:35:28,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 04:35:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 04:35:28,550 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 82 [2020-10-13 04:35:28,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:28,553 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 04:35:28,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:35:28,553 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 04:35:28,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 04:35:28,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:28,555 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 04:35:28,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 04:35:28,556 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:28,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:28,561 INFO L82 PathProgramCache]: Analyzing trace with hash -53408161, now seen corresponding path program 14 times [2020-10-13 04:35:28,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:28,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186417502] [2020-10-13 04:35:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:28,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:28,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:28,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:28,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:33,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:33,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 04:35:33,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:33,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:35:33,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:33,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:35:33,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:35:33,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:35:33,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:33,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:33,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:33,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:33,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:33,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:33,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:33,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:33,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:33,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:33,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:33,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:35:33,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:35:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:33,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:33,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:33,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:33,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:33,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:33,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:35:33,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:33,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:33,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:33,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:33,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:33,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 04:35:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:33,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:33,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:33,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:33,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:33,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:33,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:35:33,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:33,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:33,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 04:35:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:33,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:33,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:33,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:33,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:33,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:33,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:35:33,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:33,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:35:33,750 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 04:35:33,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186417502] [2020-10-13 04:35:33,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:33,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:35:33,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074714486] [2020-10-13 04:35:33,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:35:33,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:33,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:35:33,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:35:33,763 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-13 04:35:33,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:33,865 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-13 04:35:33,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:35:33,866 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-13 04:35:33,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:33,867 INFO L225 Difference]: With dead ends: 96 [2020-10-13 04:35:33,867 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 04:35:33,868 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 04:35:33,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 04:35:33,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 04:35:33,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 04:35:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 04:35:33,883 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 88 [2020-10-13 04:35:33,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:33,883 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 04:35:33,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:35:33,883 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 04:35:33,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 04:35:33,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:33,885 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 04:35:33,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 04:35:33,886 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:33,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:33,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1880792257, now seen corresponding path program 15 times [2020-10-13 04:35:33,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:33,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651642755] [2020-10-13 04:35:33,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:33,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:33,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:33,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:33,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:38,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:38,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 04:35:38,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:38,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 04:35:38,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:38,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:35:38,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 04:35:38,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:35:38,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:38,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:38,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:38,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:38,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:38,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:38,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:38,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:38,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:38,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:38,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:38,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:38,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:35:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:38,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:38,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:38,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:38,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:38,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:38,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:35:38,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:39,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:39,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:39,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 04:35:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:39,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:39,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:39,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:39,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:39,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:35:39,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:39,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:39,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:39,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:39,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:39,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 04:35:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:39,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:39,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:39,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:39,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:39,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:39,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:35:39,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:39,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:39,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:39,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:39,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:39,047 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 04:35:39,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651642755] [2020-10-13 04:35:39,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:39,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:35:39,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809865665] [2020-10-13 04:35:39,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:35:39,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:39,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:35:39,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:35:39,049 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 9 states. [2020-10-13 04:35:39,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:39,152 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2020-10-13 04:35:39,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:35:39,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 04:35:39,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:39,154 INFO L225 Difference]: With dead ends: 83 [2020-10-13 04:35:39,154 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 04:35:39,155 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 04:35:39,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 04:35:39,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 04:35:39,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 04:35:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 04:35:39,160 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 90 [2020-10-13 04:35:39,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:39,160 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 04:35:39,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:35:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 04:35:39,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 04:35:39,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:39,162 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 04:35:39,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 04:35:39,162 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:39,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:39,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1810955967, now seen corresponding path program 16 times [2020-10-13 04:35:39,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:39,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524872406] [2020-10-13 04:35:39,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:39,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:39,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:39,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:39,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:44,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:44,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 04:35:44,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:44,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:35:44,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:35:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 04:35:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:35:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:44,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:44,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:44,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:44,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:44,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:44,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:35:44,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:44,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:44,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:35:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:44,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:44,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:44,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:44,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:44,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:44,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:35:44,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:44,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:44,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:44,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 04:35:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:44,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:44,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:44,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:44,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:44,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:44,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:35:44,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:44,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:44,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 04:35:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:44,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:44,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:44,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:44,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:44,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:44,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:35:44,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:44,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:44,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:44,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:44,325 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 04:35:44,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524872406] [2020-10-13 04:35:44,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:44,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:35:44,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079984716] [2020-10-13 04:35:44,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:35:44,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:44,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:35:44,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:35:44,327 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 10 states. [2020-10-13 04:35:44,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:44,446 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-10-13 04:35:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:35:44,448 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-13 04:35:44,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:44,448 INFO L225 Difference]: With dead ends: 85 [2020-10-13 04:35:44,449 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 04:35:44,449 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 04:35:44,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 04:35:44,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 04:35:44,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 04:35:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 04:35:44,456 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 92 [2020-10-13 04:35:44,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:44,456 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 04:35:44,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:35:44,456 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 04:35:44,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 04:35:44,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:44,457 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 04:35:44,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 04:35:44,458 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:44,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:44,458 INFO L82 PathProgramCache]: Analyzing trace with hash -877209283, now seen corresponding path program 17 times [2020-10-13 04:35:44,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:44,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881672955] [2020-10-13 04:35:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:44,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:44,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:44,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:44,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:49,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:49,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 04:35:49,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:49,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 04:35:49,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:35:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 04:35:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:35:49,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:49,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:49,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:49,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:49,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:49,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:49,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:49,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:49,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:49,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:49,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:49,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:49,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:35:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:49,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:49,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:49,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:49,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:49,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:35:49,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:35:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:35:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:35:49,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:49,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 04:35:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:49,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:49,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:49,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:49,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:49,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:49,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:35:49,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:49,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:49,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 04:35:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:49,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:49,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:49,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:49,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:35:49,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:49,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:35:49,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:35:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:49,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:49,622 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 04:35:49,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881672955] [2020-10-13 04:35:49,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:49,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:35:49,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489092565] [2020-10-13 04:35:49,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:35:49,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:49,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:35:49,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:35:49,624 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 10 states. [2020-10-13 04:35:49,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:49,803 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-10-13 04:35:49,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:35:49,804 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-13 04:35:49,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:49,805 INFO L225 Difference]: With dead ends: 105 [2020-10-13 04:35:49,805 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 04:35:49,806 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 04:35:49,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 04:35:49,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 04:35:49,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 04:35:49,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 04:35:49,812 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 94 [2020-10-13 04:35:49,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:49,812 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 04:35:49,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:35:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 04:35:49,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 04:35:49,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:49,814 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 04:35:49,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 04:35:49,814 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:49,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:49,815 INFO L82 PathProgramCache]: Analyzing trace with hash -403632997, now seen corresponding path program 18 times [2020-10-13 04:35:49,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:49,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595196240] [2020-10-13 04:35:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:49,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:49,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:49,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:49,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:54,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:54,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 04:35:54,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:35:54,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:35:54,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:54,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:35:54,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:35:54,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:35:54,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:54,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:35:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:54,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:54,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:54,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:35:54,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:35:54,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:35:54,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:54,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:54,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:35:54,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:54,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:54,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:35:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:54,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:54,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:54,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:35:54,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:54,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:35:54,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:35:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:54,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:54,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:35:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:54,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:54,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:54,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:54,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:35:54,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:54,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:35:54,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:54,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:54,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:35:54,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:54,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:54,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 04:35:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:54,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:54,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:54,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:35:54,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:35:54,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:35:54,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:35:54,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:35:54,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:35:54,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:35:54,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:35:54,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:35:54,974 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 04:35:54,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595196240] [2020-10-13 04:35:54,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:35:54,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:35:54,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596933854] [2020-10-13 04:35:54,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:35:54,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:35:54,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:35:54,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:35:54,975 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 10 states. [2020-10-13 04:35:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:35:55,050 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2020-10-13 04:35:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:35:55,053 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-10-13 04:35:55,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:35:55,054 INFO L225 Difference]: With dead ends: 110 [2020-10-13 04:35:55,054 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 04:35:55,055 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 04:35:55,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 04:35:55,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 04:35:55,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 04:35:55,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 04:35:55,060 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 100 [2020-10-13 04:35:55,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:35:55,060 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 04:35:55,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:35:55,060 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 04:35:55,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 04:35:55,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:35:55,062 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 04:35:55,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 04:35:55,062 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:35:55,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:35:55,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1317136387, now seen corresponding path program 19 times [2020-10-13 04:35:55,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:35:55,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370158425] [2020-10-13 04:35:55,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:35:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:35:55,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:55,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:55,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:35:55,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:00,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:00,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 04:36:00,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:00,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 04:36:00,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:00,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:36:00,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 04:36:00,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:36:00,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:00,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:00,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:00,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:00,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:00,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:00,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:00,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:00,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:00,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:00,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:00,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:00,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:36:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:00,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:00,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:00,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:36:00,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:00,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:36:00,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:00,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:36:00,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:36:00,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:36:00,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:00,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 04:36:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:00,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:00,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:00,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:36:00,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:00,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:36:00,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:00,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:00,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:36:00,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:00,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:00,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 04:36:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:00,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:00,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:00,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:00,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:36:00,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:00,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:36:00,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:00,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:00,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:36:00,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:00,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:00,229 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-13 04:36:00,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370158425] [2020-10-13 04:36:00,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:00,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:36:00,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5252788] [2020-10-13 04:36:00,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:36:00,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:00,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:36:00,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:36:00,231 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 11 states. [2020-10-13 04:36:00,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:00,431 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2020-10-13 04:36:00,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:36:00,432 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-13 04:36:00,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:00,433 INFO L225 Difference]: With dead ends: 111 [2020-10-13 04:36:00,434 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 04:36:00,435 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 04:36:00,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 04:36:00,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 04:36:00,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 04:36:00,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 04:36:00,440 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 102 [2020-10-13 04:36:00,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:00,441 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 04:36:00,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:36:00,441 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 04:36:00,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 04:36:00,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:00,442 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 04:36:00,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 04:36:00,443 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:00,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:00,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1069382491, now seen corresponding path program 20 times [2020-10-13 04:36:00,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:00,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901618447] [2020-10-13 04:36:00,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:00,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:00,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:00,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:00,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:05,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:05,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 04:36:05,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:05,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:36:05,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:36:05,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-13 04:36:05,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:36:05,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:05,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:05,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:05,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:05,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:05,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:05,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:05,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:05,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:05,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:36:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:05,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:05,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:05,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:05,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:05,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:36:05,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:05,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 04:36:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:05,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:05,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:05,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:05,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:05,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:05,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:36:05,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:05,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:05,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 04:36:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:05,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:05,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:05,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:05,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:05,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:36:05,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:05,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:05,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:36:05,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:05,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:05,613 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 04:36:05,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901618447] [2020-10-13 04:36:05,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:05,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:36:05,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875074364] [2020-10-13 04:36:05,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:36:05,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:05,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:36:05,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:36:05,614 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 11 states. [2020-10-13 04:36:05,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:05,716 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-13 04:36:05,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:36:05,716 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-13 04:36:05,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:05,717 INFO L225 Difference]: With dead ends: 97 [2020-10-13 04:36:05,717 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 04:36:05,717 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 04:36:05,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 04:36:05,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 04:36:05,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 04:36:05,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 04:36:05,722 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-13 04:36:05,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:05,722 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 04:36:05,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:36:05,723 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 04:36:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 04:36:05,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:05,724 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 04:36:05,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 04:36:05,724 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:05,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:05,725 INFO L82 PathProgramCache]: Analyzing trace with hash 517713625, now seen corresponding path program 21 times [2020-10-13 04:36:05,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:05,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743776952] [2020-10-13 04:36:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:05,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:05,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:05,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:10,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:10,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 04:36:10,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:10,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:36:10,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:36:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:36:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:36:10,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:10,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:10,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:10,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:10,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:10,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:10,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:10,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:10,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:10,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:10,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:10,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:10,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:36:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:10,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:10,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:10,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:10,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:10,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:10,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:36:10,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:10,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:10,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:36:10,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:10,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:10,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 04:36:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:10,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:10,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:10,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:10,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:10,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:36:10,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:10,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:10,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:36:10,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:10,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:10,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 04:36:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:10,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:10,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:10,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:10,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:10,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:10,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:36:10,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:36:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:10,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:10,917 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 04:36:10,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743776952] [2020-10-13 04:36:10,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:10,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:36:10,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158783956] [2020-10-13 04:36:10,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:36:10,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:10,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:36:10,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:36:10,919 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 11 states. [2020-10-13 04:36:11,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:11,034 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2020-10-13 04:36:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:36:11,034 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-10-13 04:36:11,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:11,036 INFO L225 Difference]: With dead ends: 120 [2020-10-13 04:36:11,036 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 04:36:11,037 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 04:36:11,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 04:36:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 04:36:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 04:36:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 04:36:11,042 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 110 [2020-10-13 04:36:11,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:11,042 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 04:36:11,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:36:11,042 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 04:36:11,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 04:36:11,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:11,043 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 04:36:11,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 04:36:11,044 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:11,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:11,044 INFO L82 PathProgramCache]: Analyzing trace with hash -278698053, now seen corresponding path program 22 times [2020-10-13 04:36:11,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:11,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833231505] [2020-10-13 04:36:11,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:11,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:11,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:11,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:11,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:16,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:16,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 04:36:16,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:16,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:36:16,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:36:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 04:36:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:36:16,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:16,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:16,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:16,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:16,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:16,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:16,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:16,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:16,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:16,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:36:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:16,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:16,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:16,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:16,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:16,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:16,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:36:16,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:16,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:16,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 04:36:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:16,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:16,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:16,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:16,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:16,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:16,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:36:16,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:16,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:16,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:16,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:16,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 04:36:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:16,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:16,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:16,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:16,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:16,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:16,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:36:16,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:36:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:16,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 04:36:16,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833231505] [2020-10-13 04:36:16,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:16,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:36:16,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733588131] [2020-10-13 04:36:16,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:36:16,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:16,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:36:16,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:36:16,245 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 04:36:16,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:16,377 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-10-13 04:36:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:36:16,377 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-13 04:36:16,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:16,378 INFO L225 Difference]: With dead ends: 101 [2020-10-13 04:36:16,378 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 04:36:16,379 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 04:36:16,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 04:36:16,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 04:36:16,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 04:36:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 04:36:16,387 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-13 04:36:16,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:16,387 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 04:36:16,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:36:16,388 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 04:36:16,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 04:36:16,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:16,388 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 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 04:36:16,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 04:36:16,389 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:16,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:16,389 INFO L82 PathProgramCache]: Analyzing trace with hash 2092434233, now seen corresponding path program 23 times [2020-10-13 04:36:16,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:16,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975748357] [2020-10-13 04:36:16,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:16,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:16,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:16,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:16,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:21,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:21,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 04:36:21,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:21,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:36:21,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:36:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 04:36:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:36:21,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:21,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:21,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:21,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:21,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:21,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:21,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:21,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:21,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:21,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:36:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:21,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:21,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:21,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:21,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:21,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:36:21,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:21,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:36:21,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:36:21,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:36:21,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:21,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 04:36:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:21,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:21,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:21,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:21,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:21,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:21,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:36:21,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:21,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:21,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:36:21,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:21,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:21,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 04:36:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:21,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:21,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:21,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:36:21,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:21,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:36:21,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:36:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:21,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2020-10-13 04:36:21,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975748357] [2020-10-13 04:36:21,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:21,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:36:21,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508674988] [2020-10-13 04:36:21,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:36:21,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:21,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:36:21,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:36:21,570 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 12 states. [2020-10-13 04:36:21,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:21,787 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2020-10-13 04:36:21,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:36:21,788 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-10-13 04:36:21,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:21,789 INFO L225 Difference]: With dead ends: 125 [2020-10-13 04:36:21,789 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 04:36:21,790 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 04:36:21,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 04:36:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 04:36:21,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 04:36:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 04:36:21,795 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 114 [2020-10-13 04:36:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:21,796 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 04:36:21,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:36:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 04:36:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 04:36:21,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:21,797 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 04:36:21,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 04:36:21,797 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:21,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:21,797 INFO L82 PathProgramCache]: Analyzing trace with hash -519452777, now seen corresponding path program 24 times [2020-10-13 04:36:21,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:21,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159357808] [2020-10-13 04:36:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:21,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:21,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:21,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:21,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:26,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:26,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 04:36:26,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:26,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:36:26,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:26,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:36:26,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:36:26,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:36:26,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:26,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:26,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:26,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:26,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:26,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:26,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:36:26,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:26,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:26,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:36:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:26,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:26,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:26,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:26,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:26,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:36:26,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:26,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 04:36:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:26,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:26,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:26,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:26,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:26,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:26,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:36:26,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:26,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:26,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 04:36:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:26,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:26,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:26,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:26,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:26,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:26,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:36:26,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:26,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:26,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:26,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:26,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:26,987 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 04:36:26,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159357808] [2020-10-13 04:36:26,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:26,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:36:26,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158226026] [2020-10-13 04:36:26,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:36:26,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:26,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:36:26,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:36:26,989 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 12 states. [2020-10-13 04:36:27,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:27,109 INFO L93 Difference]: Finished difference Result 130 states and 138 transitions. [2020-10-13 04:36:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:36:27,110 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-13 04:36:27,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:27,111 INFO L225 Difference]: With dead ends: 130 [2020-10-13 04:36:27,111 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 04:36:27,112 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 04:36:27,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 04:36:27,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 04:36:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 04:36:27,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 04:36:27,118 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 120 [2020-10-13 04:36:27,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:27,119 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 04:36:27,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:36:27,119 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 04:36:27,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 04:36:27,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:27,121 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 04:36:27,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 04:36:27,122 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:27,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:27,122 INFO L82 PathProgramCache]: Analyzing trace with hash -953070087, now seen corresponding path program 25 times [2020-10-13 04:36:27,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:27,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436754027] [2020-10-13 04:36:27,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:27,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:27,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:27,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:32,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:32,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 04:36:32,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:32,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:36:32,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:32,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:36:32,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 04:36:32,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:36:32,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:32,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:32,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:32,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:32,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:32,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:32,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:32,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:32,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:32,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:32,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:32,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:32,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:36:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:32,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:32,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:32,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:32,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:32,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:36:32,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:32,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:36:32,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:36:32,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:36:32,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:32,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 04:36:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:32,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:32,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:32,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:32,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:32,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:32,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:36:32,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:32,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:32,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 04:36:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:32,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:32,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:32,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:32,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:36:32,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:32,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 04:36:32,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:32,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:32,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:36:32,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:32,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 0 proven. 449 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2020-10-13 04:36:32,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436754027] [2020-10-13 04:36:32,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:32,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:36:32,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146010958] [2020-10-13 04:36:32,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:36:32,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:32,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:36:32,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:36:32,360 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 13 states. [2020-10-13 04:36:32,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:32,612 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2020-10-13 04:36:32,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:36:32,613 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-13 04:36:32,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:32,614 INFO L225 Difference]: With dead ends: 131 [2020-10-13 04:36:32,614 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 04:36:32,615 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 04:36:32,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 04:36:32,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 04:36:32,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 04:36:32,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 04:36:32,624 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 122 [2020-10-13 04:36:32,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:32,625 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 04:36:32,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:36:32,625 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 04:36:32,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 04:36:32,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:32,628 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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 04:36:32,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 04:36:32,629 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:32,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:32,629 INFO L82 PathProgramCache]: Analyzing trace with hash -246005161, now seen corresponding path program 26 times [2020-10-13 04:36:32,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:32,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147152398] [2020-10-13 04:36:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:32,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:32,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:32,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:32,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:37,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:37,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 04:36:37,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:37,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:36:37,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:36:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 04:36:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:36:37,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:37,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:37,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:37,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:37,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:37,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:37,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:37,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:37,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:37,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:36:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:37,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:37,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:37,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:37,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:37,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:37,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:36:37,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:37,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:37,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:37,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:37,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:37,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 04:36:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:37,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:37,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:37,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:37,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:37,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:37,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:36:37,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:37,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:37,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 04:36:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:37,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:37,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:37,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:37,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:37,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:37,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:36:37,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:37,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 04:36:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2020-10-13 04:36:37,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147152398] [2020-10-13 04:36:37,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:37,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:36:37,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765580766] [2020-10-13 04:36:37,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:36:37,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:37,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:36:37,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:36:37,873 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 13 states. [2020-10-13 04:36:37,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:37,987 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2020-10-13 04:36:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:36:37,988 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 128 [2020-10-13 04:36:37,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:37,989 INFO L225 Difference]: With dead ends: 113 [2020-10-13 04:36:37,989 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 04:36:37,990 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 04:36:37,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 04:36:37,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 04:36:37,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 04:36:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 04:36:37,995 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-13 04:36:37,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:37,995 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 04:36:37,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:36:37,996 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 04:36:37,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 04:36:37,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:37,997 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 04:36:37,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 04:36:37,997 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:37,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:37,997 INFO L82 PathProgramCache]: Analyzing trace with hash 618378965, now seen corresponding path program 27 times [2020-10-13 04:36:37,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:37,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313684007] [2020-10-13 04:36:37,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:38,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:38,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:38,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:38,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:43,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:43,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 04:36:43,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:43,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 04:36:43,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:43,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:36:43,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:36:43,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:36:43,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:43,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:43,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:43,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:43,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:43,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:43,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:36:43,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:43,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:43,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:43,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:43,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:43,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:36:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:43,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:43,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:43,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:43,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:43,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:43,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:36:43,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:43,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:43,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:43,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:43,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:43,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 04:36:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:43,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:43,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:43,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:43,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:43,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:43,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:36:43,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:43,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:43,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:43,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:43,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:43,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 04:36:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:43,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:43,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:43,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:43,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:43,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:43,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:36:43,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:43,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:43,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:43,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:43,252 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 04:36:43,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313684007] [2020-10-13 04:36:43,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:43,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:36:43,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319411808] [2020-10-13 04:36:43,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:36:43,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:43,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:36:43,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:36:43,254 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 13 states. [2020-10-13 04:36:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:43,372 INFO L93 Difference]: Finished difference Result 140 states and 148 transitions. [2020-10-13 04:36:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:36:43,372 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-10-13 04:36:43,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:43,373 INFO L225 Difference]: With dead ends: 140 [2020-10-13 04:36:43,373 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 04:36:43,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:36:43,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 04:36:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 04:36:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 04:36:43,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-13 04:36:43,380 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 130 [2020-10-13 04:36:43,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:43,380 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-13 04:36:43,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:36:43,380 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-13 04:36:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 04:36:43,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:43,381 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 04:36:43,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 04:36:43,382 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:43,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:43,382 INFO L82 PathProgramCache]: Analyzing trace with hash 2069899959, now seen corresponding path program 28 times [2020-10-13 04:36:43,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:43,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398184034] [2020-10-13 04:36:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:43,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:43,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:43,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:48,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:48,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 04:36:48,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:48,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 04:36:48,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:36:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 04:36:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:36:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:48,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:48,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:48,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:48,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:48,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:48,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:48,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:48,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:48,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:48,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:48,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:48,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:36:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:48,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:48,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:48,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:48,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:48,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:48,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:36:48,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:48,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:48,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 04:36:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:48,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:48,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:48,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:48,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:48,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:48,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 04:36:48,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:48,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:48,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 04:36:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:48,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:48,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:48,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:48,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:48,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:48,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:36:48,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:48,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:48,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:48,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:48,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 04:36:48,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398184034] [2020-10-13 04:36:48,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:48,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:36:48,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759241705] [2020-10-13 04:36:48,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:36:48,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:48,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:36:48,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:36:48,646 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 14 states. [2020-10-13 04:36:48,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:48,757 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2020-10-13 04:36:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:36:48,763 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-13 04:36:48,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:48,764 INFO L225 Difference]: With dead ends: 117 [2020-10-13 04:36:48,765 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 04:36:48,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:36:48,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 04:36:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 04:36:48,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 04:36:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-13 04:36:48,771 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 132 [2020-10-13 04:36:48,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:48,771 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-13 04:36:48,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:36:48,771 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-13 04:36:48,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 04:36:48,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:48,772 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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 04:36:48,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 04:36:48,773 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:48,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:48,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1410139957, now seen corresponding path program 29 times [2020-10-13 04:36:48,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:48,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472931034] [2020-10-13 04:36:48,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:48,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:48,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:49,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:53,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:53,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 04:36:53,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:53,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 04:36:53,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:36:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 04:36:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:36:53,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:53,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:53,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:53,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:53,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:53,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:53,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:36:53,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:53,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:53,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:53,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:53,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:53,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:36:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:53,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:53,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:53,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:53,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:53,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:53,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:36:53,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:53,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:53,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 04:36:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:53,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:53,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:53,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:53,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:53,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:36:53,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:36:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:36:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:36:53,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:53,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 04:36:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:53,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:54,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:54,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:36:54,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:36:54,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:36:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:54,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:54,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 224 proven. 324 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-10-13 04:36:54,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472931034] [2020-10-13 04:36:54,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:54,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:36:54,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557128767] [2020-10-13 04:36:54,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:36:54,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:54,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:36:54,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:36:54,034 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 14 states. [2020-10-13 04:36:54,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:54,298 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2020-10-13 04:36:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:36:54,298 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 134 [2020-10-13 04:36:54,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:54,299 INFO L225 Difference]: With dead ends: 145 [2020-10-13 04:36:54,300 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 04:36:54,300 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 04:36:54,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 04:36:54,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 04:36:54,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 04:36:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 04:36:54,308 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 134 [2020-10-13 04:36:54,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:54,309 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 04:36:54,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:36:54,309 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 04:36:54,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 04:36:54,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:54,311 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 04:36:54,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 04:36:54,311 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:54,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:54,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1973017747, now seen corresponding path program 30 times [2020-10-13 04:36:54,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:54,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288881202] [2020-10-13 04:36:54,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:54,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:54,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:54,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:54,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:59,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:59,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 04:36:59,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:36:59,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 04:36:59,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:36:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:36:59,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:36:59,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:59,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:36:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:59,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:59,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:59,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:36:59,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:36:59,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:36:59,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:59,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:59,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:36:59,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:59,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:59,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:36:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:59,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:59,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:59,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:59,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:36:59,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:59,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:36:59,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:36:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:59,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:59,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 04:36:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:59,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:59,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:59,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:59,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:36:59,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:59,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:36:59,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:59,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:59,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:36:59,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:59,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:59,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 04:36:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:59,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:59,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:36:59,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:36:59,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:36:59,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:36:59,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:36:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:36:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:36:59,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:36:59,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:36:59,577 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 04:36:59,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288881202] [2020-10-13 04:36:59,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:36:59,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:36:59,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092353595] [2020-10-13 04:36:59,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:36:59,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:36:59,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:36:59,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:36:59,579 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 14 states. [2020-10-13 04:36:59,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:36:59,697 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-10-13 04:36:59,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:36:59,698 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2020-10-13 04:36:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:36:59,699 INFO L225 Difference]: With dead ends: 150 [2020-10-13 04:36:59,699 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 04:36:59,700 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 04:36:59,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 04:36:59,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 04:36:59,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 04:36:59,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-13 04:36:59,706 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 140 [2020-10-13 04:36:59,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:36:59,706 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-13 04:36:59,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:36:59,707 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-13 04:36:59,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 04:36:59,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:36:59,708 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 04:36:59,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 04:36:59,708 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:36:59,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:36:59,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1521459723, now seen corresponding path program 31 times [2020-10-13 04:36:59,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:36:59,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977618770] [2020-10-13 04:36:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:36:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:36:59,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:59,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:59,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:36:59,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:04,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 04:37:04,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:04,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 04:37:04,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:04,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:37:04,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 04:37:04,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:37:04,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:04,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:04,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:04,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:04,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:04,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:04,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:04,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:04,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:04,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:04,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:04,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:37:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:04,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:04,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:04,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:04,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:37:04,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:04,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:04,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:04,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:04,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:04,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 04:37:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:04,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:04,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:04,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:04,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:37:04,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:04,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:04,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 04:37:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:04,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:04,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:04,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:04,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:04,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:37:04,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:04,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:04,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:37:04,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:04,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:04,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 04:37:04,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977618770] [2020-10-13 04:37:04,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:04,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:37:04,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216973068] [2020-10-13 04:37:04,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:37:04,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:04,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:37:04,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:37:04,983 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 15 states. [2020-10-13 04:37:05,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:05,076 INFO L93 Difference]: Finished difference Result 125 states and 130 transitions. [2020-10-13 04:37:05,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:37:05,077 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 142 [2020-10-13 04:37:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:05,078 INFO L225 Difference]: With dead ends: 125 [2020-10-13 04:37:05,078 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 04:37:05,079 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 04:37:05,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 04:37:05,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 04:37:05,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 04:37:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 04:37:05,085 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 142 [2020-10-13 04:37:05,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:05,085 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 04:37:05,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:37:05,085 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 04:37:05,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 04:37:05,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:05,087 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 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 04:37:05,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 04:37:05,087 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:05,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:05,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1482222323, now seen corresponding path program 32 times [2020-10-13 04:37:05,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:05,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007747504] [2020-10-13 04:37:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:05,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:05,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:05,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:05,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:10,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:10,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 04:37:10,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:10,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 04:37:10,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:37:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:37:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:37:10,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:10,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:10,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:10,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:10,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:10,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:10,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:10,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:10,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:10,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:10,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:10,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:10,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:37:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:10,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:10,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:10,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:10,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:10,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:10,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:37:10,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:10,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:10,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:37:10,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:10,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:10,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 04:37:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:10,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:10,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:10,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:10,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:10,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:10,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:37:10,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:10,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:10,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:37:10,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:10,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:10,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 04:37:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:10,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:10,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:10,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:10,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:10,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:10,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:37:10,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:10,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:10,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:37:10,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:10,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1314 trivial. 0 not checked. [2020-10-13 04:37:10,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007747504] [2020-10-13 04:37:10,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:10,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:37:10,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801857595] [2020-10-13 04:37:10,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:37:10,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:10,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:37:10,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:37:10,361 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 15 states. [2020-10-13 04:37:10,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:10,502 INFO L93 Difference]: Finished difference Result 156 states and 164 transitions. [2020-10-13 04:37:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:37:10,502 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 144 [2020-10-13 04:37:10,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:10,503 INFO L225 Difference]: With dead ends: 156 [2020-10-13 04:37:10,503 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 04:37:10,504 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 04:37:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 04:37:10,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 04:37:10,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 04:37:10,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-13 04:37:10,510 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 144 [2020-10-13 04:37:10,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:10,510 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-13 04:37:10,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:37:10,510 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-13 04:37:10,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 04:37:10,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:10,511 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 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 04:37:10,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 04:37:10,512 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:10,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:10,512 INFO L82 PathProgramCache]: Analyzing trace with hash -599004331, now seen corresponding path program 33 times [2020-10-13 04:37:10,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:10,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085645414] [2020-10-13 04:37:10,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:10,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:10,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:10,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:10,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:15,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 04:37:15,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:15,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:37:15,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:15,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:37:15,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 04:37:15,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:37:15,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:15,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:15,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:15,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:15,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:15,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:15,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:15,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:15,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:37:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:15,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:15,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:15,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:15,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:37:15,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:15,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 04:37:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:15,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:15,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:15,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:15,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:37:15,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:37:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:37:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:37:15,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:15,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 04:37:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:15,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:15,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:15,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:37:15,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:15,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:37:15,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:15,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:15,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:37:15,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:15,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:15,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 268 proven. 389 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2020-10-13 04:37:15,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085645414] [2020-10-13 04:37:15,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:15,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:37:15,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520575269] [2020-10-13 04:37:15,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:37:15,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:15,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:37:15,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:37:15,786 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 15 states. [2020-10-13 04:37:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:16,107 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2020-10-13 04:37:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:37:16,108 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 146 [2020-10-13 04:37:16,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:16,109 INFO L225 Difference]: With dead ends: 157 [2020-10-13 04:37:16,110 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 04:37:16,111 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 04:37:16,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 04:37:16,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 04:37:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 04:37:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 04:37:16,117 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 146 [2020-10-13 04:37:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:16,117 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 04:37:16,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:37:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 04:37:16,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 04:37:16,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:16,118 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 04:37:16,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 04:37:16,119 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:16,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:16,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1800030131, now seen corresponding path program 34 times [2020-10-13 04:37:16,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:16,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563549075] [2020-10-13 04:37:16,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:16,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:16,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:16,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:16,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:21,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:21,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 04:37:21,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:21,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 04:37:21,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:21,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:37:21,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 04:37:21,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:37:21,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:21,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:21,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:21,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:21,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:21,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:21,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:21,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:37:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:21,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:21,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:21,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:21,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:21,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:21,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:37:21,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:21,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:21,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:21,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 04:37:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:21,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:21,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:21,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:21,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:21,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:21,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:37:21,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:21,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:21,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:21,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:21,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:21,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 04:37:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:21,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:21,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:21,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:21,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:21,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 04:37:21,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:37:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:21,457 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 04:37:21,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563549075] [2020-10-13 04:37:21,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:21,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:37:21,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158468660] [2020-10-13 04:37:21,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:37:21,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:21,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:37:21,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:37:21,459 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 16 states. [2020-10-13 04:37:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:21,613 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-10-13 04:37:21,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:37:21,614 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 152 [2020-10-13 04:37:21,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:21,615 INFO L225 Difference]: With dead ends: 133 [2020-10-13 04:37:21,615 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 04:37:21,615 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 04:37:21,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 04:37:21,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 04:37:21,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 04:37:21,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-13 04:37:21,620 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 152 [2020-10-13 04:37:21,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:21,621 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-13 04:37:21,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:37:21,621 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-13 04:37:21,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 04:37:21,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:21,623 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 04:37:21,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 04:37:21,623 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:21,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:21,623 INFO L82 PathProgramCache]: Analyzing trace with hash 609805617, now seen corresponding path program 35 times [2020-10-13 04:37:21,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:21,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101143551] [2020-10-13 04:37:21,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:21,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:21,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:21,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:21,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:26,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 04:37:26,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:37:26,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:37:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:37:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:37:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:26,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:26,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:26,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:26,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:26,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:26,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:26,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:26,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:37:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:26,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:26,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:26,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:26,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 04:37:26,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:26,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:37:26,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:26,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:26,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 04:37:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:26,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:26,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:26,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:26,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 04:37:26,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:37:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:26,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:26,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 04:37:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:26,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:26,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:26,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:26,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:26,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 04:37:26,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:37:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:26,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-10-13 04:37:26,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101143551] [2020-10-13 04:37:26,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:26,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:37:26,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827339348] [2020-10-13 04:37:26,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:37:26,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:26,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:37:26,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:37:26,992 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 16 states. [2020-10-13 04:37:27,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:27,133 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2020-10-13 04:37:27,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:37:27,134 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 154 [2020-10-13 04:37:27,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:27,134 INFO L225 Difference]: With dead ends: 166 [2020-10-13 04:37:27,135 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 04:37:27,135 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 04:37:27,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 04:37:27,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-13 04:37:27,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 04:37:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 04:37:27,140 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 154 [2020-10-13 04:37:27,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:27,141 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 04:37:27,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:37:27,141 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 04:37:27,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 04:37:27,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:27,142 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 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 04:37:27,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 04:37:27,142 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:27,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:27,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1810345197, now seen corresponding path program 36 times [2020-10-13 04:37:27,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:27,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994833005] [2020-10-13 04:37:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:27,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:27,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:27,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:27,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:32,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:32,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 04:37:32,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:32,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:37:32,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:32,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:37:32,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 04:37:32,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:37:32,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:32,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:32,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:32,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:32,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:32,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:32,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:32,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:32,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:32,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:32,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:32,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:32,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:37:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:32,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:32,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:32,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:32,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:32,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:37:32,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:32,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:37:32,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:37:32,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:37:32,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 04:37:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:32,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:32,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:32,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:32,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:32,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:32,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:37:32,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:37:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:32,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:32,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 04:37:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:32,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:32,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:32,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:32,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:37:32,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:37:32,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:37:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:32,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 0 proven. 776 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2020-10-13 04:37:32,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994833005] [2020-10-13 04:37:32,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:32,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:37:32,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405813186] [2020-10-13 04:37:32,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:37:32,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:32,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:37:32,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:37:32,438 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 16 states. [2020-10-13 04:37:32,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:32,736 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2020-10-13 04:37:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:37:32,736 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 156 [2020-10-13 04:37:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:32,737 INFO L225 Difference]: With dead ends: 167 [2020-10-13 04:37:32,737 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 04:37:32,738 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 04:37:32,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 04:37:32,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 04:37:32,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 04:37:32,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 04:37:32,744 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 156 [2020-10-13 04:37:32,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:32,744 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 04:37:32,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:37:32,744 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 04:37:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 04:37:32,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:32,745 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 04:37:32,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 04:37:32,746 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:32,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:32,746 INFO L82 PathProgramCache]: Analyzing trace with hash 914245617, now seen corresponding path program 37 times [2020-10-13 04:37:32,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:32,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666149634] [2020-10-13 04:37:32,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:32,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:32,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:33,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:37,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:37,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 04:37:37,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:37,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:37:37,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:37:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 04:37:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:37:37,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:37,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:37,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:37,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:37,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:37,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:37,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:37,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:37,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:37,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:37:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:37,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:37,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:37,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:37:37,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:37,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:37:37,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:37:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:37:37,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:37:37,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:37,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 04:37:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:37,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:37,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:38,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:38,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:37:38,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:38,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:37:38,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:38,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:37:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:38,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:38,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 04:37:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:38,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:38,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:38,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:38,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:37:38,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:38,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:37:38,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:38,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:38,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:37:38,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:38,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:38,051 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 04:37:38,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666149634] [2020-10-13 04:37:38,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:38,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:37:38,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682402445] [2020-10-13 04:37:38,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:37:38,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:38,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:37:38,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:37:38,053 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 17 states. [2020-10-13 04:37:38,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:38,423 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2020-10-13 04:37:38,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:37:38,424 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 162 [2020-10-13 04:37:38,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:38,425 INFO L225 Difference]: With dead ends: 171 [2020-10-13 04:37:38,425 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 04:37:38,426 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 04:37:38,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 04:37:38,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 04:37:38,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 04:37:38,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-13 04:37:38,431 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 162 [2020-10-13 04:37:38,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:38,432 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-13 04:37:38,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:37:38,432 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-13 04:37:38,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 04:37:38,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:38,433 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 04:37:38,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 04:37:38,434 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:38,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:38,434 INFO L82 PathProgramCache]: Analyzing trace with hash -593961393, now seen corresponding path program 38 times [2020-10-13 04:37:38,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:38,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814253866] [2020-10-13 04:37:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:38,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:38,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:38,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:43,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 04:37:43,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:43,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 04:37:43,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:43,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:37:43,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 04:37:43,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:37:43,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:43,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:43,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:43,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:43,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:43,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:43,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:43,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:43,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:37:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:43,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:43,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:43,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:43,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 04:37:43,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:43,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:43,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:43,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:43,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:43,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 04:37:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:43,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:43,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:43,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:43,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 04:37:43,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:43,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:43,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:43,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:43,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:43,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 04:37:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:43,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:43,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:43,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:43,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:37:43,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:37:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:43,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:43,795 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 04:37:43,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814253866] [2020-10-13 04:37:43,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:43,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:37:43,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411102640] [2020-10-13 04:37:43,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:37:43,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:43,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:37:43,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:37:43,796 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 17 states. [2020-10-13 04:37:43,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:43,888 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2020-10-13 04:37:43,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:37:43,889 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 168 [2020-10-13 04:37:43,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:43,890 INFO L225 Difference]: With dead ends: 145 [2020-10-13 04:37:43,890 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 04:37:43,891 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 04:37:43,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 04:37:43,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 04:37:43,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 04:37:43,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-13 04:37:43,895 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 168 [2020-10-13 04:37:43,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:43,896 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-13 04:37:43,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:37:43,896 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-13 04:37:43,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 04:37:43,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:43,897 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 04:37:43,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 04:37:43,898 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:43,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:43,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1305040077, now seen corresponding path program 39 times [2020-10-13 04:37:43,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:43,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603304580] [2020-10-13 04:37:43,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:43,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:43,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:44,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:48,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:48,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 04:37:48,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:48,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 04:37:48,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:37:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:37:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:37:48,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:49,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:49,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:49,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:49,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:49,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:37:49,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:49,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:49,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:49,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:49,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:49,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:37:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:49,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:49,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:49,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:49,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 04:37:49,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:37:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:49,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:49,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 04:37:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:49,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:49,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:49,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:49,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 04:37:49,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:37:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:49,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:49,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 04:37:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:49,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:49,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:49,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 04:37:49,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:37:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:49,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:49,233 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 04:37:49,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603304580] [2020-10-13 04:37:49,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:49,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:37:49,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613423799] [2020-10-13 04:37:49,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:37:49,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:49,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:37:49,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:37:49,234 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 17 states. [2020-10-13 04:37:49,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:49,378 INFO L93 Difference]: Finished difference Result 180 states and 188 transitions. [2020-10-13 04:37:49,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:37:49,378 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 170 [2020-10-13 04:37:49,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:49,379 INFO L225 Difference]: With dead ends: 180 [2020-10-13 04:37:49,379 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 04:37:49,380 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 04:37:49,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 04:37:49,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 04:37:49,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 04:37:49,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-13 04:37:49,388 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 170 [2020-10-13 04:37:49,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:49,390 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-13 04:37:49,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:37:49,391 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-13 04:37:49,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 04:37:49,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:49,392 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 04:37:49,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 04:37:49,392 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:49,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:49,393 INFO L82 PathProgramCache]: Analyzing trace with hash -385565009, now seen corresponding path program 40 times [2020-10-13 04:37:49,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:49,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611817443] [2020-10-13 04:37:49,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:49,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:54,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:54,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 04:37:54,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:37:54,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-13 04:37:54,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:37:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 04:37:54,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:37:54,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:54,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:37:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:54,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:54,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:54,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:37:54,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:37:54,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:54,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:37:54,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:37:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:54,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:54,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:54,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:54,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:54,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:54,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 04:37:54,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:54,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:54,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:37:54,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:54,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:54,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 04:37:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:54,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:54,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:54,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:54,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:37:54,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 04:37:54,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:54,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:37:54,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:37:54,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:37:54,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:54,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 04:37:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:54,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:54,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:54,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:37:54,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:37:54,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:37:54,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 04:37:54,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:37:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:37:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:37:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:37:54,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:37:55,026 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 04:37:55,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611817443] [2020-10-13 04:37:55,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:37:55,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:37:55,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874675476] [2020-10-13 04:37:55,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:37:55,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:37:55,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:37:55,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:37:55,029 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 18 states. [2020-10-13 04:37:55,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:37:55,421 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2020-10-13 04:37:55,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:37:55,422 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2020-10-13 04:37:55,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:37:55,423 INFO L225 Difference]: With dead ends: 181 [2020-10-13 04:37:55,424 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 04:37:55,425 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 04:37:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 04:37:55,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-13 04:37:55,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 04:37:55,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-13 04:37:55,431 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 172 [2020-10-13 04:37:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:37:55,431 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-13 04:37:55,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:37:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-13 04:37:55,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 04:37:55,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:37:55,433 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 04:37:55,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 04:37:55,433 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:37:55,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:37:55,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1649480307, now seen corresponding path program 41 times [2020-10-13 04:37:55,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:37:55,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767003988] [2020-10-13 04:37:55,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:37:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:37:55,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:55,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:55,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:37:55,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:00,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 04:38:00,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:38:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 04:38:00,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:38:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:38:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:38:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:00,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:38:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:00,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:00,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:38:00,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:38:00,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:38:00,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:38:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:00,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:00,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:38:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:00,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:00,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:00,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 04:38:00,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:00,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:00,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 04:38:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:00,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:00,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:00,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:00,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 04:38:00,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:00,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:00,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 04:38:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:00,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:00,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:00,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:00,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:00,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 04:38:00,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:00,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:00,856 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 04:38:00,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767003988] [2020-10-13 04:38:00,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:38:00,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:38:00,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159707286] [2020-10-13 04:38:00,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:38:00,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:38:00,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:38:00,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:38:00,858 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 18 states. [2020-10-13 04:38:01,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:38:01,033 INFO L93 Difference]: Finished difference Result 186 states and 194 transitions. [2020-10-13 04:38:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:38:01,034 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 178 [2020-10-13 04:38:01,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:38:01,035 INFO L225 Difference]: With dead ends: 186 [2020-10-13 04:38:01,036 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 04:38:01,036 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 04:38:01,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 04:38:01,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-13 04:38:01,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 04:38:01,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-13 04:38:01,042 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 178 [2020-10-13 04:38:01,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:38:01,043 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-13 04:38:01,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:38:01,043 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-13 04:38:01,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 04:38:01,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:38:01,044 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 04:38:01,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 04:38:01,045 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:38:01,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:38:01,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1009035921, now seen corresponding path program 42 times [2020-10-13 04:38:01,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:38:01,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711597865] [2020-10-13 04:38:01,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:38:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:01,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:01,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:01,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:01,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:06,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 04:38:06,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:38:06,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 04:38:06,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:06,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:38:06,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 04:38:06,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:38:06,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:06,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:38:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:06,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:06,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:38:06,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:38:06,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:38:06,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:06,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:38:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:06,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:06,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:38:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:06,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:06,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:06,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 04:38:06,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:38:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:06,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 04:38:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:06,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:06,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:06,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 04:38:06,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:38:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:06,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 04:38:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:06,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:06,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:06,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:06,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 04:38:06,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:06,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:06,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:06,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:06,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:06,414 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 04:38:06,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711597865] [2020-10-13 04:38:06,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:38:06,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:38:06,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451978227] [2020-10-13 04:38:06,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:38:06,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:38:06,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:38:06,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:38:06,416 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 18 states. [2020-10-13 04:38:06,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:38:06,585 INFO L93 Difference]: Finished difference Result 155 states and 160 transitions. [2020-10-13 04:38:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:38:06,586 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 180 [2020-10-13 04:38:06,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:38:06,587 INFO L225 Difference]: With dead ends: 155 [2020-10-13 04:38:06,587 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 04:38:06,588 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 04:38:06,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 04:38:06,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-13 04:38:06,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 04:38:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-10-13 04:38:06,592 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 180 [2020-10-13 04:38:06,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:38:06,593 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-10-13 04:38:06,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:38:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-10-13 04:38:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 04:38:06,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:38:06,594 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 04:38:06,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 04:38:06,595 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:38:06,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:38:06,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1814164499, now seen corresponding path program 43 times [2020-10-13 04:38:06,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:38:06,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606694842] [2020-10-13 04:38:06,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:38:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:06,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:06,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:07,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:11,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:11,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 04:38:11,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:38:11,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:38:11,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:11,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 04:38:11,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 04:38:11,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 04:38:11,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:11,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:38:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:11,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:11,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:38:11,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:38:11,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:38:11,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:11,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:11,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:38:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:11,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:11,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:38:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:11,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:11,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:11,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:11,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:38:11,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 04:38:11,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:11,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 04:38:11,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:38:11,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 04:38:11,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:11,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 04:38:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:11,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:11,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:11,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:11,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:11,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:11,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 04:38:11,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:11,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:11,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:11,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:11,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:11,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 04:38:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:11,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:11,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:12,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:38:12,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:38:12,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:38:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 04:38:12,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:38:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:38:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:38:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:38:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:38:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 0 proven. 1193 refuted. 0 times theorem prover too weak. 1387 trivial. 0 not checked. [2020-10-13 04:38:12,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606694842] [2020-10-13 04:38:12,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:38:12,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 04:38:12,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547963905] [2020-10-13 04:38:12,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 04:38:12,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:38:12,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 04:38:12,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:38:12,022 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand 19 states. [2020-10-13 04:38:12,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:38:12,406 INFO L93 Difference]: Finished difference Result 191 states and 201 transitions. [2020-10-13 04:38:12,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 04:38:12,406 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 182 [2020-10-13 04:38:12,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:38:12,407 INFO L225 Difference]: With dead ends: 191 [2020-10-13 04:38:12,408 INFO L226 Difference]: Without dead ends: 116 [2020-10-13 04:38:12,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 04:38:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-13 04:38:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-13 04:38:12,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 04:38:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2020-10-13 04:38:12,414 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 182 [2020-10-13 04:38:12,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:38:12,415 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2020-10-13 04:38:12,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 04:38:12,415 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2020-10-13 04:38:12,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-13 04:38:12,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:38:12,417 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 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 04:38:12,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 04:38:12,417 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:38:12,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:38:12,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1199000757, now seen corresponding path program 44 times [2020-10-13 04:38:12,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:38:12,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372991400] [2020-10-13 04:38:12,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:38:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:38:12,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:12,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:12,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:38:12,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking...