/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/reducercommutativity/max10-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:27:53,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:27:53,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:27:53,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:27:53,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:27:53,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:27:53,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:27:53,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:27:53,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:27:53,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:27:53,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:27:53,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:27:53,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:27:53,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:27:53,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:27:53,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:27:53,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:27:53,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:27:53,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:27:53,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:27:53,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:27:53,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:27:53,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:27:53,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:27:53,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:27:53,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:27:53,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:27:53,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:27:53,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:27:53,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:27:53,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:27:53,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:27:53,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:27:53,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:27:53,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:27:53,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:27:53,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:27:53,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:27:53,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:27:53,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:27:53,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:27:53,186 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 [2020-10-28 17:27:53,238 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:27:53,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:27:53,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:27:53,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:27:53,243 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:27:53,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:27:53,244 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:27:53,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:27:53,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:27:53,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:27:53,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:27:53,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:27:53,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:27:53,247 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:27:53,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:27:53,247 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:27:53,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:27:53,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:27:53,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:27:53,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:27:53,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:27:53,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:27:53,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:27:53,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:27:53,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:27:53,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:27:53,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:27:53,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:27:53,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:27:53,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:27:53,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:27:53,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:27:53,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:27:53,734 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:27:53,735 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:27:53,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max10-1.i [2020-10-28 17:27:53,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80262e701/8a32ae4bb19447ebb34bc0e4b567baec/FLAG7f549cf6b [2020-10-28 17:27:54,483 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:27:54,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max10-1.i [2020-10-28 17:27:54,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80262e701/8a32ae4bb19447ebb34bc0e4b567baec/FLAG7f549cf6b [2020-10-28 17:27:54,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80262e701/8a32ae4bb19447ebb34bc0e4b567baec [2020-10-28 17:27:54,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:27:54,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:27:54,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:27:54,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:27:54,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:27:54,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:27:54" (1/1) ... [2020-10-28 17:27:54,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34da7b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:54, skipping insertion in model container [2020-10-28 17:27:54,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:27:54" (1/1) ... [2020-10-28 17:27:54,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:27:54,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:27:55,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:27:55,043 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:27:55,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:27:55,087 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:27:55,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:55 WrapperNode [2020-10-28 17:27:55,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:27:55,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:27:55,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:27:55,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:27:55,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:55" (1/1) ... [2020-10-28 17:27:55,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:55" (1/1) ... [2020-10-28 17:27:55,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:55" (1/1) ... [2020-10-28 17:27:55,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:55" (1/1) ... [2020-10-28 17:27:55,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:55" (1/1) ... [2020-10-28 17:27:55,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:55" (1/1) ... [2020-10-28 17:27:55,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:55" (1/1) ... [2020-10-28 17:27:55,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:27:55,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:27:55,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:27:55,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:27:55,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:55" (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 [2020-10-28 17:27:55,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:27:55,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:27:55,216 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:27:55,216 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-28 17:27:55,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:27:55,217 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:27:55,217 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:27:55,217 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 17:27:55,217 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 17:27:55,217 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:27:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:27:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:27:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-28 17:27:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:27:55,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:27:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:27:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:27:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:27:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:27:55,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:27:55,666 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:27:55,667 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 17:27:55,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:27:55 BoogieIcfgContainer [2020-10-28 17:27:55,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:27:55,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:27:55,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:27:55,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:27:55,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:27:54" (1/3) ... [2020-10-28 17:27:55,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220324c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:27:55, skipping insertion in model container [2020-10-28 17:27:55,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:27:55" (2/3) ... [2020-10-28 17:27:55,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220324c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:27:55, skipping insertion in model container [2020-10-28 17:27:55,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:27:55" (3/3) ... [2020-10-28 17:27:55,678 INFO L111 eAbstractionObserver]: Analyzing ICFG max10-1.i [2020-10-28 17:27:55,691 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:27:55,697 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:27:55,711 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:27:55,740 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:27:55,740 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:27:55,740 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:27:55,740 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:27:55,740 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:27:55,741 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:27:55,741 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:27:55,741 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:27:55,759 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-28 17:27:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:27:55,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:27:55,767 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, 1, 1] [2020-10-28 17:27:55,767 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:27:55,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:27:55,774 INFO L82 PathProgramCache]: Analyzing trace with hash -122162658, now seen corresponding path program 1 times [2020-10-28 17:27:55,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:27:55,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644910702] [2020-10-28 17:27:55,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:27:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:55,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:56,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:56,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:56,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:56,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:56,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:27:57,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:27:57,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1869 [2020-10-28 17:27:57,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:27:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:57,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:27:57,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:27:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:57,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:57,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:27:57,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:57,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:57,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:27:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:57,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:27:57,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:27:57,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:57,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:57,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 17:27:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:57,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:27:57,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:27:57,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:57,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:27:57,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:57,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:57,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:27:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:57,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:57,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:57,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:57,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:57,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:27:57,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:57,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:57,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:57,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:27:58,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:58,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:27:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 17:27:58,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644910702] [2020-10-28 17:27:58,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:27:58,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 17:27:58,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131663978] [2020-10-28 17:27:58,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 17:27:58,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:27:58,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 17:27:58,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:27:58,046 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-28 17:27:58,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:27:58,162 INFO L93 Difference]: Finished difference Result 64 states and 86 transitions. [2020-10-28 17:27:58,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 17:27:58,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-28 17:27:58,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:27:58,173 INFO L225 Difference]: With dead ends: 64 [2020-10-28 17:27:58,173 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 17:27:58,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:27:58,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 17:27:58,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-28 17:27:58,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 17:27:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-28 17:27:58,224 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 34 [2020-10-28 17:27:58,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:27:58,225 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-28 17:27:58,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 17:27:58,225 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-28 17:27:58,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:27:58,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:27:58,228 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, 1, 1] [2020-10-28 17:27:58,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:27:58,228 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:27:58,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:27:58,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1084102031, now seen corresponding path program 1 times [2020-10-28 17:27:58,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:27:58,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570317395] [2020-10-28 17:27:58,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:27:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:58,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:58,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:58,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:58,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:58,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:58,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:59,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:27:59,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:27:59,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1481 [2020-10-28 17:27:59,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:59,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:27:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:27:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:27:59,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:59,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:27:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:59,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:27:59,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:27:59,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:27:59,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:59,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:27:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:59,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:27:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:59,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:59,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:59,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:27:59,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:27:59,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:59,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:59,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:59,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:27:59,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:59,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:59,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 17:27:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:59,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:59,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:59,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:27:59,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:27:59,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:59,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:59,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:59,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:27:59,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:59,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:27:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:27:59,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:27:59,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:27:59,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:27:59,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:27:59,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:27:59,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:27:59,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:27:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:27:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:27:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:27:59,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:27:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:27:59,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570317395] [2020-10-28 17:27:59,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:27:59,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:27:59,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542625090] [2020-10-28 17:27:59,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:27:59,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:27:59,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:27:59,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:27:59,836 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 4 states. [2020-10-28 17:27:59,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:27:59,977 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-28 17:27:59,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:27:59,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-28 17:27:59,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:27:59,979 INFO L225 Difference]: With dead ends: 54 [2020-10-28 17:27:59,979 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 17:27:59,981 INFO L677 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 [2020-10-28 17:27:59,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 17:27:59,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-28 17:27:59,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 17:27:59,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-28 17:27:59,990 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 34 [2020-10-28 17:27:59,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:27:59,991 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-28 17:27:59,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:27:59,991 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-28 17:27:59,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 17:27:59,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:27:59,992 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, 1, 1, 1, 1] [2020-10-28 17:27:59,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:27:59,993 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:27:59,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:27:59,993 INFO L82 PathProgramCache]: Analyzing trace with hash -839912781, now seen corresponding path program 1 times [2020-10-28 17:27:59,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:27:59,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129851490] [2020-10-28 17:27:59,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:00,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:00,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:00,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:00,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:00,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:00,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:01,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:01,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:28:01,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:01,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1987 [2020-10-28 17:28:01,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:01,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:01,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:28:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:28:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:28:01,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:02,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:02,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:02,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:02,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:02,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:28:02,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:02,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:02,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:02,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:02,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:02,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:02,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:28:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:02,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:02,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:02,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:02,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:28:02,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:02,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:02,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:02,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:28:02,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:02,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:02,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:28:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:02,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:02,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:02,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:02,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:28:02,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:02,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:02,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:02,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:28:02,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:02,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:02,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:28:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:02,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:02,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:02,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:02,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:28:02,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:02,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:28:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:02,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:28:02,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129851490] [2020-10-28 17:28:02,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:02,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:28:02,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786856703] [2020-10-28 17:28:02,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:28:02,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:02,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:28:02,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:28:02,121 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2020-10-28 17:28:02,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:02,228 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-28 17:28:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:28:02,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-28 17:28:02,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:02,230 INFO L225 Difference]: With dead ends: 56 [2020-10-28 17:28:02,230 INFO L226 Difference]: Without dead ends: 34 [2020-10-28 17:28:02,231 INFO L677 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 [2020-10-28 17:28:02,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-28 17:28:02,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-28 17:28:02,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 17:28:02,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-28 17:28:02,239 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 36 [2020-10-28 17:28:02,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:02,239 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-28 17:28:02,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:28:02,239 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-28 17:28:02,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 17:28:02,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:02,241 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 17:28:02,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:28:02,241 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:02,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:02,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1897722485, now seen corresponding path program 2 times [2020-10-28 17:28:02,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:02,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490818938] [2020-10-28 17:28:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:02,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:28:05,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:05,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2914 [2020-10-28 17:28:05,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:05,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 17:28:05,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:28:05,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:05,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:05,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:28:05,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:05,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:28:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:05,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:05,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:28:05,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:05,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:05,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:05,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 17:28:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:05,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:05,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:28:05,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:05,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:28:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:05,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:05,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:28:05,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:28:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:28:05,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:28:05,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490818938] [2020-10-28 17:28:05,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:28:05,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:28:05,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585003031] [2020-10-28 17:28:05,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:28:05,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:05,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:28:05,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:28:05,265 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 4 states. [2020-10-28 17:28:05,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:05,372 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2020-10-28 17:28:05,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:28:05,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-28 17:28:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:05,374 INFO L225 Difference]: With dead ends: 58 [2020-10-28 17:28:05,374 INFO L226 Difference]: Without dead ends: 37 [2020-10-28 17:28:05,374 INFO L677 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 [2020-10-28 17:28:05,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-28 17:28:05,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-10-28 17:28:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 17:28:05,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-28 17:28:05,383 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 38 [2020-10-28 17:28:05,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:05,383 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-28 17:28:05,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:28:05,383 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-28 17:28:05,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 17:28:05,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:05,385 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1] [2020-10-28 17:28:05,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:28:05,385 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:05,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:05,386 INFO L82 PathProgramCache]: Analyzing trace with hash -467101424, now seen corresponding path program 1 times [2020-10-28 17:28:05,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:05,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051863820] [2020-10-28 17:28:05,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:10,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:10,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 17:28:10,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:28:10,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 17:28:10,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:10,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:10,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:28:10,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:28:10,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:28:10,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:10,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:10,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:10,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:10,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:10,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:10,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:28:10,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:10,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:10,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:10,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:10,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:10,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:10,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:28:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:10,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:10,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:10,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:10,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:28:10,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:10,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:28:10,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:10,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:10,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:10,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 17:28:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:10,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:10,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:10,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:28:10,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:10,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:28:10,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:10,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:10,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:28:10,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:28:10,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:28:10,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:10,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:28:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:10,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:10,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:10,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:10,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:28:10,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:10,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:28:10,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:10,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:10,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:10,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:28:10,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:10,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-28 17:28:10,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051863820] [2020-10-28 17:28:10,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:10,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:28:10,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006038357] [2020-10-28 17:28:10,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:28:10,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:10,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:28:10,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:28:10,586 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2020-10-28 17:28:10,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:10,741 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2020-10-28 17:28:10,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:28:10,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-28 17:28:10,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:10,743 INFO L225 Difference]: With dead ends: 63 [2020-10-28 17:28:10,743 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 17:28:10,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:28:10,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 17:28:10,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-10-28 17:28:10,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 17:28:10,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-28 17:28:10,752 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 50 [2020-10-28 17:28:10,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:10,752 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-28 17:28:10,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:28:10,752 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-28 17:28:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 17:28:10,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:10,754 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2020-10-28 17:28:10,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:28:10,755 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:10,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:10,755 INFO L82 PathProgramCache]: Analyzing trace with hash -26988757, now seen corresponding path program 2 times [2020-10-28 17:28:10,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:10,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545356566] [2020-10-28 17:28:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:10,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:10,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:10,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:10,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:12,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:15,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:15,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 17:28:15,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:15,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 17:28:15,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:15,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:15,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:15,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 17:28:15,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:28:15,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:15,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:15,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:15,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:15,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:15,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:15,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:28:15,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:15,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:15,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:15,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:15,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:28:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:15,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:15,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:15,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:15,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:15,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:15,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 17:28:15,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:15,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:15,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:15,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 17:28:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:15,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:15,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:15,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:15,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:15,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 17:28:15,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:15,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:15,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:15,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 17:28:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:15,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:15,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:15,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:15,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:15,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:15,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 17:28:15,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:15,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:28:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:15,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-28 17:28:15,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545356566] [2020-10-28 17:28:15,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:28:15,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:28:15,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758388442] [2020-10-28 17:28:15,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:28:15,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:15,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:28:15,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:28:15,982 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 4 states. [2020-10-28 17:28:16,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:16,083 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-10-28 17:28:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:28:16,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-28 17:28:16,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:16,084 INFO L225 Difference]: With dead ends: 61 [2020-10-28 17:28:16,084 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 17:28:16,085 INFO L677 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 [2020-10-28 17:28:16,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 17:28:16,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-28 17:28:16,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 17:28:16,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-28 17:28:16,092 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 62 [2020-10-28 17:28:16,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:16,094 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-28 17:28:16,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:28:16,094 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-28 17:28:16,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 17:28:16,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:16,095 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1] [2020-10-28 17:28:16,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:28:16,096 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:16,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:16,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1182221175, now seen corresponding path program 1 times [2020-10-28 17:28:16,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:16,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712428631] [2020-10-28 17:28:16,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:16,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:16,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:16,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:16,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:21,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 17:28:21,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:28:21,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 17:28:21,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:21,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:21,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:28:21,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:28:21,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:28:21,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:21,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:21,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:21,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:21,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:21,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:21,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:21,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:21,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:21,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:21,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:21,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:21,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:28:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:21,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:21,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:21,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:21,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 17:28:21,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:21,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:21,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:21,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 17:28:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:21,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:21,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:21,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:21,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:28:21,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:21,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:21,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:28:21,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:28:21,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:28:21,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:21,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 17:28:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:21,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:21,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:21,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:21,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 17:28:21,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:21,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:28:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:21,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 24 proven. 30 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-28 17:28:21,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712428631] [2020-10-28 17:28:21,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:21,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:28:21,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36727524] [2020-10-28 17:28:21,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:28:21,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:21,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:28:21,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:28:21,339 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 6 states. [2020-10-28 17:28:21,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:21,549 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2020-10-28 17:28:21,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:28:21,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-28 17:28:21,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:21,551 INFO L225 Difference]: With dead ends: 73 [2020-10-28 17:28:21,551 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 17:28:21,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:28:21,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 17:28:21,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-10-28 17:28:21,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 17:28:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-28 17:28:21,565 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 64 [2020-10-28 17:28:21,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:21,565 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-28 17:28:21,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:28:21,566 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-28 17:28:21,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 17:28:21,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:21,570 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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, 1, 1] [2020-10-28 17:28:21,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:28:21,570 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:21,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:21,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1019671772, now seen corresponding path program 2 times [2020-10-28 17:28:21,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:21,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921254080] [2020-10-28 17:28:21,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:21,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:24,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:26,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:26,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 17:28:26,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:26,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 17:28:26,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:26,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:28:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:28:26,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:28:26,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:26,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:26,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:26,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:26,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:26,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:28:26,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:26,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:26,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:26,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:26,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:26,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:26,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:28:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:26,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:26,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:26,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:26,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:26,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:26,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 17:28:26,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:26,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:26,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:26,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:28:26,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:26,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:26,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 17:28:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:26,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:26,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:26,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:26,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:26,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:26,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 17:28:26,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:26,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:26,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:26,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:28:26,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:26,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:26,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 17:28:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:26,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:26,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:26,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:26,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:26,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:26,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 17:28:26,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:26,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:26,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:26,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:28:26,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:26,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-28 17:28:26,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921254080] [2020-10-28 17:28:26,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:26,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:28:26,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866110561] [2020-10-28 17:28:26,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:28:26,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:26,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:28:26,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:28:26,850 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 6 states. [2020-10-28 17:28:26,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:26,954 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2020-10-28 17:28:26,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:28:26,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-28 17:28:26,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:26,956 INFO L225 Difference]: With dead ends: 78 [2020-10-28 17:28:26,956 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 17:28:26,957 INFO L677 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 [2020-10-28 17:28:26,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 17:28:26,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 17:28:26,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 17:28:26,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-28 17:28:26,964 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 76 [2020-10-28 17:28:26,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:26,964 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-28 17:28:26,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:28:26,965 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-28 17:28:26,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 17:28:26,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:26,966 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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] [2020-10-28 17:28:26,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:28:26,966 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:26,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:26,967 INFO L82 PathProgramCache]: Analyzing trace with hash -426008346, now seen corresponding path program 3 times [2020-10-28 17:28:26,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:26,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911772492] [2020-10-28 17:28:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:26,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:27,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:27,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:27,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:27,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:29,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:31,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:31,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 17:28:31,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:31,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:28:31,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:31,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:28:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 17:28:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:28:31,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:32,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:32,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:32,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:32,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:32,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:32,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:32,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:32,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:32,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:32,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:32,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:32,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:28:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:32,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:32,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:32,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:32,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 17:28:32,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:32,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:32,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:32,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:32,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:28:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:32,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:32,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:32,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:32,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 17:28:32,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:32,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:32,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:32,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:32,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:32,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:32,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:28:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:32,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:32,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:32,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:32,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 17:28:32,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:32,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:28:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:32,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-28 17:28:32,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911772492] [2020-10-28 17:28:32,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:32,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:28:32,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9418048] [2020-10-28 17:28:32,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:28:32,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:32,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:28:32,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:28:32,210 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-10-28 17:28:32,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:32,304 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-10-28 17:28:32,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:28:32,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-28 17:28:32,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:32,305 INFO L225 Difference]: With dead ends: 73 [2020-10-28 17:28:32,306 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 17:28:32,310 INFO L677 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 [2020-10-28 17:28:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 17:28:32,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-28 17:28:32,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 17:28:32,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-10-28 17:28:32,323 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 78 [2020-10-28 17:28:32,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:32,324 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-10-28 17:28:32,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:28:32,324 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-10-28 17:28:32,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 17:28:32,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:32,325 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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, 1, 1] [2020-10-28 17:28:32,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:28:32,325 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:32,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:32,330 INFO L82 PathProgramCache]: Analyzing trace with hash -643125436, now seen corresponding path program 4 times [2020-10-28 17:28:32,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:32,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205550302] [2020-10-28 17:28:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:32,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:35,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:36,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:37,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 17:28:37,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:28:37,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:28:37,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:37,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:28:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 17:28:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:28:37,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:37,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:37,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:37,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:37,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:37,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:37,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:37,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:37,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:37,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:37,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:28:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:37,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:37,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:37,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:37,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 17:28:37,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:37,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:37,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:37,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:37,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:37,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:37,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:28:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:37,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:37,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:37,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:37,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 17:28:37,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:37,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:37,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:28:37,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:28:37,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:28:37,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:37,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:28:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:37,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:37,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:37,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:37,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 17:28:37,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:37,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:37,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:37,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:28:37,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:37,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:37,560 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 46 proven. 61 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-28 17:28:37,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205550302] [2020-10-28 17:28:37,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:37,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:28:37,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007534944] [2020-10-28 17:28:37,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:28:37,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:37,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:28:37,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:28:37,563 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 7 states. [2020-10-28 17:28:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:37,766 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2020-10-28 17:28:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:28:37,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-28 17:28:37,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:37,768 INFO L225 Difference]: With dead ends: 87 [2020-10-28 17:28:37,768 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 17:28:37,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:28:37,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 17:28:37,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-28 17:28:37,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 17:28:37,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-10-28 17:28:37,775 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 80 [2020-10-28 17:28:37,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:37,776 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-10-28 17:28:37,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:28:37,776 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-10-28 17:28:37,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 17:28:37,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:37,777 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 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, 1, 1] [2020-10-28 17:28:37,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:28:37,777 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:37,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:37,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1184767137, now seen corresponding path program 5 times [2020-10-28 17:28:37,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:37,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247347272] [2020-10-28 17:28:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:37,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:38,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:38,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:40,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:42,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:42,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 17:28:42,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:28:42,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 17:28:42,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:42,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:28:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:28:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:28:42,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:42,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:42,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:42,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:42,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:42,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:42,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:42,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:42,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:42,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:42,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:42,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:42,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:42,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:28:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:42,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:42,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:42,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:42,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:28:42,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:42,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 17:28:42,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:42,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:42,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:42,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 17:28:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:42,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:42,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:42,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:28:42,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:42,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 17:28:42,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:42,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:28:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:28:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:28:42,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:42,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:28:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:42,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:43,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:28:43,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:43,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 17:28:43,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:43,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:43,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:43,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:28:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:43,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 76 proven. 104 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-28 17:28:43,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247347272] [2020-10-28 17:28:43,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:43,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:28:43,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871953667] [2020-10-28 17:28:43,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:28:43,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:43,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:28:43,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:28:43,053 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 8 states. [2020-10-28 17:28:43,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:43,340 INFO L93 Difference]: Finished difference Result 95 states and 115 transitions. [2020-10-28 17:28:43,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:28:43,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-10-28 17:28:43,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:43,343 INFO L225 Difference]: With dead ends: 95 [2020-10-28 17:28:43,343 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 17:28:43,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:28:43,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 17:28:43,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-10-28 17:28:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 17:28:43,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-28 17:28:43,353 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 92 [2020-10-28 17:28:43,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:43,353 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-28 17:28:43,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:28:43,353 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-28 17:28:43,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 17:28:43,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:43,354 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 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, 1, 1] [2020-10-28 17:28:43,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:28:43,355 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:43,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:43,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1710311162, now seen corresponding path program 6 times [2020-10-28 17:28:43,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:43,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120676586] [2020-10-28 17:28:43,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:43,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:44,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:44,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:48,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 17:28:48,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:28:48,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 17:28:48,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:48,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:28:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:28:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:28:48,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:48,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:48,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:48,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:48,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:48,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:28:48,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:48,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:48,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:48,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:48,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:48,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:48,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:28:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:48,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:48,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:48,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:48,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 17:28:48,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:48,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:48,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:48,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:28:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:48,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:48,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:48,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:48,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 17:28:48,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:48,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:48,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:48,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:28:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:48,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:48,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:48,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:48,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 17:28:48,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:48,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:48,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2020-10-28 17:28:48,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120676586] [2020-10-28 17:28:48,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:48,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:28:48,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249133740] [2020-10-28 17:28:48,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:28:48,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:48,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:28:48,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:28:48,753 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 7 states. [2020-10-28 17:28:48,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:48,846 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2020-10-28 17:28:48,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:28:48,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-28 17:28:48,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:48,847 INFO L225 Difference]: With dead ends: 100 [2020-10-28 17:28:48,847 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 17:28:48,848 INFO L677 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 [2020-10-28 17:28:48,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 17:28:48,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-28 17:28:48,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 17:28:48,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-28 17:28:48,854 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 104 [2020-10-28 17:28:48,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:48,855 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-28 17:28:48,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:28:48,855 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-28 17:28:48,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 17:28:48,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:48,856 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 4, 4, 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] [2020-10-28 17:28:48,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:28:48,856 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:48,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:48,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1356694972, now seen corresponding path program 7 times [2020-10-28 17:28:48,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:48,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302978104] [2020-10-28 17:28:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:48,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:49,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:53,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:53,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 17:28:53,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:28:53,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 17:28:53,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:53,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:53,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:28:53,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:28:53,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:28:53,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:53,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:53,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:53,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:53,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:53,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:53,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:28:53,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:53,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:53,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:53,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 17:28:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:53,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:53,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:54,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:54,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:54,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 17:28:54,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:54,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:54,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:54,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:28:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:54,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:54,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:54,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:54,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 17:28:54,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:54,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:54,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:54,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:54,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:54,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:54,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:28:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:54,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:54,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:54,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:54,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 17:28:54,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:54,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:54,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:54,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:54,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:54,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:54,304 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2020-10-28 17:28:54,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302978104] [2020-10-28 17:28:54,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:54,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:28:54,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527502234] [2020-10-28 17:28:54,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:28:54,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:54,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:28:54,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:28:54,308 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 8 states. [2020-10-28 17:28:54,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:54,465 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2020-10-28 17:28:54,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:28:54,466 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2020-10-28 17:28:54,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:54,469 INFO L225 Difference]: With dead ends: 102 [2020-10-28 17:28:54,470 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 17:28:54,470 INFO L677 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 [2020-10-28 17:28:54,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 17:28:54,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-28 17:28:54,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 17:28:54,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2020-10-28 17:28:54,491 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 106 [2020-10-28 17:28:54,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:54,491 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2020-10-28 17:28:54,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:28:54,492 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2020-10-28 17:28:54,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 17:28:54,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:54,493 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 5, 5, 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] [2020-10-28 17:28:54,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:28:54,493 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:54,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:54,494 INFO L82 PathProgramCache]: Analyzing trace with hash 833952766, now seen corresponding path program 8 times [2020-10-28 17:28:54,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:54,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784892079] [2020-10-28 17:28:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:54,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:59,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:59,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 17:28:59,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:28:59,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 17:28:59,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:59,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:28:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 17:28:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:28:59,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:59,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:59,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:59,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:59,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:59,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:59,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:59,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:59,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:59,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:59,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:28:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:59,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:59,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:59,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:59,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:59,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 17:28:59,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:59,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:59,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:59,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 17:28:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:59,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:59,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:59,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:59,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:59,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:59,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 17:28:59,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:59,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:59,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:59,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:59,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:59,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:59,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:28:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:59,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:59,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:59,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:59,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:59,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:59,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 17:28:59,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:59,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:59,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2020-10-28 17:28:59,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784892079] [2020-10-28 17:28:59,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:59,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:28:59,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261405796] [2020-10-28 17:28:59,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:28:59,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:59,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:28:59,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:28:59,909 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 6 states. [2020-10-28 17:29:00,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:00,027 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2020-10-28 17:29:00,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:29:00,027 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-28 17:29:00,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:00,029 INFO L225 Difference]: With dead ends: 95 [2020-10-28 17:29:00,029 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 17:29:00,030 INFO L677 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 [2020-10-28 17:29:00,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 17:29:00,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-28 17:29:00,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 17:29:00,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2020-10-28 17:29:00,037 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 108 [2020-10-28 17:29:00,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:00,037 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2020-10-28 17:29:00,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:29:00,037 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2020-10-28 17:29:00,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 17:29:00,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:00,039 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 5, 5, 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] [2020-10-28 17:29:00,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:29:00,040 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:00,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:00,041 INFO L82 PathProgramCache]: Analyzing trace with hash -909497380, now seen corresponding path program 9 times [2020-10-28 17:29:00,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:00,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299924321] [2020-10-28 17:29:00,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:00,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:05,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 17:29:05,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:05,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 17:29:05,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:05,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:05,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:29:05,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 17:29:05,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:29:05,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:05,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:05,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:05,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:05,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:05,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:05,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:05,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:05,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:05,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:05,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:05,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:05,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:29:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:05,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:05,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:05,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:05,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 17:29:05,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:05,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:05,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:05,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:05,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:05,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:05,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 17:29:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:05,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:05,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:05,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:05,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 17:29:05,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:05,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:05,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:29:05,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:29:05,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:29:05,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:05,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:29:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:05,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:05,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:05,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:05,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 17:29:05,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:05,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:05,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:05,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:29:05,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:05,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 114 proven. 159 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2020-10-28 17:29:05,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299924321] [2020-10-28 17:29:05,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:05,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:29:05,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87377582] [2020-10-28 17:29:05,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:29:05,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:05,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:29:05,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:29:05,519 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 9 states. [2020-10-28 17:29:05,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:05,862 INFO L93 Difference]: Finished difference Result 111 states and 133 transitions. [2020-10-28 17:29:05,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:29:05,863 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 110 [2020-10-28 17:29:05,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:05,865 INFO L225 Difference]: With dead ends: 111 [2020-10-28 17:29:05,865 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 17:29:05,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:29:05,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 17:29:05,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2020-10-28 17:29:05,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 17:29:05,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2020-10-28 17:29:05,883 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 110 [2020-10-28 17:29:05,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:05,885 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2020-10-28 17:29:05,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:29:05,885 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2020-10-28 17:29:05,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 17:29:05,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:05,887 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 5, 5, 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] [2020-10-28 17:29:05,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:29:05,887 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:05,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:05,888 INFO L82 PathProgramCache]: Analyzing trace with hash -2112380425, now seen corresponding path program 10 times [2020-10-28 17:29:05,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:05,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907095453] [2020-10-28 17:29:05,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:05,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:06,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:06,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:10,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:10,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 17:29:10,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:10,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 17:29:10,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:10,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:29:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 17:29:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:29:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:10,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:10,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:10,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:10,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:10,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:10,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:10,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:10,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:10,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:29:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:10,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:11,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:29:11,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:11,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 17:29:11,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:11,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:11,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:29:11,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:29:11,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:29:11,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:11,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:29:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:11,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:11,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:29:11,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:11,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 17:29:11,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:11,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 17:29:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:11,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:11,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:29:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:11,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:11,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:29:11,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:11,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 17:29:11,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:11,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:11,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:11,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 17:29:11,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:11,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:11,367 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2020-10-28 17:29:11,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907095453] [2020-10-28 17:29:11,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:11,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:29:11,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742215622] [2020-10-28 17:29:11,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:29:11,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:11,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:29:11,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:29:11,373 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 10 states. [2020-10-28 17:29:11,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:11,684 INFO L93 Difference]: Finished difference Result 119 states and 143 transitions. [2020-10-28 17:29:11,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:29:11,685 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 122 [2020-10-28 17:29:11,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:11,686 INFO L225 Difference]: With dead ends: 119 [2020-10-28 17:29:11,686 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 17:29:11,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:29:11,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 17:29:11,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2020-10-28 17:29:11,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 17:29:11,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2020-10-28 17:29:11,693 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 122 [2020-10-28 17:29:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:11,693 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2020-10-28 17:29:11,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:29:11,693 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2020-10-28 17:29:11,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 17:29:11,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:11,694 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 5, 5, 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] [2020-10-28 17:29:11,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:29:11,695 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:11,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:11,695 INFO L82 PathProgramCache]: Analyzing trace with hash 2130708370, now seen corresponding path program 11 times [2020-10-28 17:29:11,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:11,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534950373] [2020-10-28 17:29:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:11,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:16,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:16,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 17:29:16,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:16,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 17:29:16,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:16,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:16,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:29:16,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:29:16,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:29:16,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:16,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:16,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:16,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:16,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:16,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:16,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:16,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:16,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:16,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:29:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:16,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:16,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:16,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:16,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:16,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:16,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 17:29:16,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:16,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:16,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:16,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:29:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:16,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:16,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:16,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:16,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:16,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:16,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 17:29:16,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:16,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:16,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:16,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:16,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:16,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:16,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 17:29:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:16,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:17,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:17,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:17,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 17:29:17,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:17,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:17,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:17,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:17,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:17,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 927 trivial. 0 not checked. [2020-10-28 17:29:17,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534950373] [2020-10-28 17:29:17,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:17,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:29:17,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228211997] [2020-10-28 17:29:17,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:29:17,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:17,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:29:17,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:29:17,106 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand 9 states. [2020-10-28 17:29:17,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:17,216 INFO L93 Difference]: Finished difference Result 124 states and 146 transitions. [2020-10-28 17:29:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:29:17,216 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 134 [2020-10-28 17:29:17,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:17,217 INFO L225 Difference]: With dead ends: 124 [2020-10-28 17:29:17,217 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 17:29:17,218 INFO L677 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 [2020-10-28 17:29:17,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 17:29:17,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-28 17:29:17,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 17:29:17,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2020-10-28 17:29:17,227 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 134 [2020-10-28 17:29:17,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:17,228 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2020-10-28 17:29:17,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:29:17,229 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2020-10-28 17:29:17,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 17:29:17,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:17,230 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 6, 6, 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] [2020-10-28 17:29:17,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 17:29:17,231 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:17,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:17,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1110210860, now seen corresponding path program 12 times [2020-10-28 17:29:17,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:17,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886526587] [2020-10-28 17:29:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:17,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:22,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 17:29:22,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:22,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:29:22,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:22,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:29:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:29:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:29:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:22,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:22,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:22,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:22,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:22,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:22,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:22,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:22,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:22,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 17:29:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:22,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:22,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:22,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 17:29:22,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:22,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:22,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:22,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:29:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:22,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:22,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:22,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:22,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 17:29:22,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:22,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:22,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:22,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:29:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:22,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:22,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:22,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:22,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 17:29:22,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:22,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:22,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 927 trivial. 0 not checked. [2020-10-28 17:29:22,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886526587] [2020-10-28 17:29:22,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:22,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:29:22,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189734258] [2020-10-28 17:29:22,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:29:22,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:22,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:29:22,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:29:22,676 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand 10 states. [2020-10-28 17:29:22,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:22,780 INFO L93 Difference]: Finished difference Result 126 states and 148 transitions. [2020-10-28 17:29:22,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:29:22,781 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 136 [2020-10-28 17:29:22,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:22,781 INFO L225 Difference]: With dead ends: 126 [2020-10-28 17:29:22,781 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 17:29:22,782 INFO L677 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 [2020-10-28 17:29:22,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 17:29:22,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-28 17:29:22,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 17:29:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2020-10-28 17:29:22,789 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 136 [2020-10-28 17:29:22,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:22,789 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2020-10-28 17:29:22,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:29:22,789 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2020-10-28 17:29:22,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 17:29:22,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:22,791 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 7, 7, 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] [2020-10-28 17:29:22,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 17:29:22,792 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:22,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:22,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1782301290, now seen corresponding path program 13 times [2020-10-28 17:29:22,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:22,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655487612] [2020-10-28 17:29:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:22,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:27,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:27,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 17:29:27,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:27,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 17:29:27,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:27,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:27,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:29:27,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-28 17:29:27,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:29:27,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:27,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:27,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:27,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:27,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:27,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:29:27,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:27,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:27,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:27,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:27,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:27,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:27,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:29:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:27,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:27,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:27,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:27,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:27,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:27,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 17:29:27,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:27,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:27,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:27,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:29:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:27,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:27,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:28,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:28,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:28,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 17:29:28,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:28,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:28,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:28,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:28,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:28,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:29:28,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:29:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:28,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:28,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:28,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:28,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 17:29:28,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:28,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:28,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:28,249 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2020-10-28 17:29:28,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655487612] [2020-10-28 17:29:28,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:28,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:29:28,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114550072] [2020-10-28 17:29:28,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:29:28,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:28,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:29:28,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:29:28,251 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand 7 states. [2020-10-28 17:29:28,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:28,382 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2020-10-28 17:29:28,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:29:28,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-28 17:29:28,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:28,385 INFO L225 Difference]: With dead ends: 117 [2020-10-28 17:29:28,385 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 17:29:28,386 INFO L677 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 [2020-10-28 17:29:28,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 17:29:28,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-28 17:29:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-28 17:29:28,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2020-10-28 17:29:28,392 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 138 [2020-10-28 17:29:28,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:28,392 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2020-10-28 17:29:28,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:29:28,392 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2020-10-28 17:29:28,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-28 17:29:28,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:28,394 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 7, 7, 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, 1, 1] [2020-10-28 17:29:28,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 17:29:28,395 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:28,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:28,395 INFO L82 PathProgramCache]: Analyzing trace with hash 519057140, now seen corresponding path program 14 times [2020-10-28 17:29:28,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:28,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444151800] [2020-10-28 17:29:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:28,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:33,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:33,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 17:29:33,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:33,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 17:29:33,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:33,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:29:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 17:29:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:29:33,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:33,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:33,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:33,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:33,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:33,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:33,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:33,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:33,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:33,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:33,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:29:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:33,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:33,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:33,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:33,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:33,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:33,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 17:29:33,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:33,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:33,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:33,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:29:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:33,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:33,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:33,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:33,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:33,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 17:29:33,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:33,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:29:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:29:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:29:33,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:33,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 17:29:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:33,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:33,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:33,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:33,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:33,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 17:29:33,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:33,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:33,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:33,838 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 214 proven. 305 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2020-10-28 17:29:33,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444151800] [2020-10-28 17:29:33,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:33,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:29:33,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054696366] [2020-10-28 17:29:33,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:29:33,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:33,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:29:33,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:29:33,841 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand 11 states. [2020-10-28 17:29:34,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:34,204 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2020-10-28 17:29:34,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:29:34,204 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 140 [2020-10-28 17:29:34,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:34,206 INFO L225 Difference]: With dead ends: 135 [2020-10-28 17:29:34,206 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 17:29:34,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:29:34,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 17:29:34,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-10-28 17:29:34,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 17:29:34,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2020-10-28 17:29:34,213 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 140 [2020-10-28 17:29:34,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:34,213 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2020-10-28 17:29:34,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:29:34,213 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2020-10-28 17:29:34,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 17:29:34,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:34,215 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 7, 7, 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, 1, 1] [2020-10-28 17:29:34,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 17:29:34,215 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:34,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:34,216 INFO L82 PathProgramCache]: Analyzing trace with hash 935831311, now seen corresponding path program 15 times [2020-10-28 17:29:34,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:34,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512400439] [2020-10-28 17:29:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:34,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:34,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:34,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:34,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:34,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:39,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 17:29:39,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:39,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 17:29:39,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:39,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:29:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:29:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:29:39,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:39,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:39,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:39,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:39,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:39,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:39,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:39,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:39,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:39,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:29:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:39,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:39,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:39,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:39,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 17:29:39,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:39,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:39,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:39,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:29:39,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:39,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:39,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:29:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:39,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:39,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:39,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:39,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 17:29:39,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:39,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:39,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:39,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:29:39,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:39,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:39,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 17:29:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:39,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:39,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:39,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:39,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 17:29:39,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:39,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:39,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:39,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:29:39,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:39,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2020-10-28 17:29:39,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512400439] [2020-10-28 17:29:39,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:39,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:29:39,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104039398] [2020-10-28 17:29:39,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:29:39,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:39,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:29:39,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:29:39,789 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand 11 states. [2020-10-28 17:29:39,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:39,957 INFO L93 Difference]: Finished difference Result 140 states and 164 transitions. [2020-10-28 17:29:39,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:29:39,958 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 152 [2020-10-28 17:29:39,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:39,959 INFO L225 Difference]: With dead ends: 140 [2020-10-28 17:29:39,959 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 17:29:39,960 INFO L677 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 [2020-10-28 17:29:39,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 17:29:39,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-28 17:29:39,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 17:29:39,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2020-10-28 17:29:39,966 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 152 [2020-10-28 17:29:39,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:39,967 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2020-10-28 17:29:39,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:29:39,967 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2020-10-28 17:29:39,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 17:29:39,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:39,968 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 8, 8, 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, 1, 1] [2020-10-28 17:29:39,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 17:29:39,969 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:39,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:39,969 INFO L82 PathProgramCache]: Analyzing trace with hash 340171217, now seen corresponding path program 16 times [2020-10-28 17:29:39,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:39,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289101974] [2020-10-28 17:29:39,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:40,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:40,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:40,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:40,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:45,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 17:29:45,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:45,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 17:29:45,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:45,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:29:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 17:29:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:29:45,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:45,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:45,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:45,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:45,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:45,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:29:45,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:45,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:45,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:45,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:45,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:45,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:45,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:29:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:45,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:45,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:45,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:45,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 17:29:45,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:45,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:45,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:45,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:45,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:45,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:45,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:29:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:45,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:45,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:45,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:45,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 17:29:45,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:45,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:45,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:45,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 17:29:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:45,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:45,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:45,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:45,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 17:29:45,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:45,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:45,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:45,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:29:45,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:45,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1255 trivial. 0 not checked. [2020-10-28 17:29:45,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289101974] [2020-10-28 17:29:45,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:45,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:29:45,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066630364] [2020-10-28 17:29:45,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:29:45,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:45,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:29:45,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:29:45,427 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand 8 states. [2020-10-28 17:29:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:45,565 INFO L93 Difference]: Finished difference Result 129 states and 150 transitions. [2020-10-28 17:29:45,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:29:45,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 154 [2020-10-28 17:29:45,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:45,567 INFO L225 Difference]: With dead ends: 129 [2020-10-28 17:29:45,568 INFO L226 Difference]: Without dead ends: 84 [2020-10-28 17:29:45,568 INFO L677 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 [2020-10-28 17:29:45,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-28 17:29:45,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-28 17:29:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 17:29:45,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-10-28 17:29:45,576 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 154 [2020-10-28 17:29:45,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:45,576 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-10-28 17:29:45,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:29:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-10-28 17:29:45,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 17:29:45,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:45,577 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 8, 8, 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, 1, 1] [2020-10-28 17:29:45,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 17:29:45,578 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:45,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:45,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1411052497, now seen corresponding path program 17 times [2020-10-28 17:29:45,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:45,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653452932] [2020-10-28 17:29:45,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:45,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:50,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:50,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 17:29:50,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:50,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 17:29:50,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:50,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:50,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:29:50,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 17:29:50,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 17:29:50,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:50,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:50,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:50,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:50,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:50,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:50,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:29:50,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:50,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:50,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:50,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:50,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:50,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:50,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:29:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:50,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:50,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:50,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:50,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 17:29:50,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:50,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:29:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:29:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 17:29:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:50,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:29:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:50,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:50,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:50,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:50,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:50,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:50,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 17:29:50,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:50,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:29:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:50,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:50,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 17:29:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:50,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:50,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:51,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:51,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:51,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:51,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 17:29:51,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:51,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:29:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:51,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2020-10-28 17:29:51,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653452932] [2020-10-28 17:29:51,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:51,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:29:51,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339496844] [2020-10-28 17:29:51,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:29:51,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:51,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:29:51,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:29:51,053 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 12 states. [2020-10-28 17:29:51,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:51,532 INFO L93 Difference]: Finished difference Result 149 states and 177 transitions. [2020-10-28 17:29:51,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:29:51,533 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 156 [2020-10-28 17:29:51,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:51,534 INFO L225 Difference]: With dead ends: 149 [2020-10-28 17:29:51,534 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 17:29:51,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:29:51,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 17:29:51,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2020-10-28 17:29:51,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 17:29:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 100 transitions. [2020-10-28 17:29:51,542 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 100 transitions. Word has length 156 [2020-10-28 17:29:51,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:51,542 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 100 transitions. [2020-10-28 17:29:51,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:29:51,542 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 100 transitions. [2020-10-28 17:29:51,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 17:29:51,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:51,544 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 8, 8, 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, 1, 1] [2020-10-28 17:29:51,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 17:29:51,544 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:51,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:51,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1230493238, now seen corresponding path program 18 times [2020-10-28 17:29:51,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:51,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658774597] [2020-10-28 17:29:51,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:51,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:51,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:51,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:51,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:55,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:55,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:56,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:56,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-28 17:29:56,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:29:56,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 17:29:56,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:56,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:56,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:29:56,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 17:29:56,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:29:56,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:56,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:56,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:56,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:56,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:56,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:56,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:29:56,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:56,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:56,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:56,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:56,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:56,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:29:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:56,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:56,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:56,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:29:56,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:56,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 17:29:56,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:56,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:56,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:29:56,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:29:56,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:29:56,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:56,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:29:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:56,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:56,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:56,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:29:56,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:56,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 17:29:56,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:56,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 17:29:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:56,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:57,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 17:29:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:57,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:57,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:57,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:57,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:29:57,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:57,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 17:29:57,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:57,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 17:29:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:57,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 0 proven. 845 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2020-10-28 17:29:57,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658774597] [2020-10-28 17:29:57,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:57,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:29:57,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185161669] [2020-10-28 17:29:57,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:29:57,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:57,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:29:57,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:29:57,158 INFO L87 Difference]: Start difference. First operand 87 states and 100 transitions. Second operand 13 states. [2020-10-28 17:29:57,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:57,638 INFO L93 Difference]: Finished difference Result 154 states and 183 transitions. [2020-10-28 17:29:57,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:29:57,639 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 168 [2020-10-28 17:29:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:57,640 INFO L225 Difference]: With dead ends: 154 [2020-10-28 17:29:57,640 INFO L226 Difference]: Without dead ends: 91 [2020-10-28 17:29:57,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:29:57,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-28 17:29:57,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-28 17:29:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 17:29:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2020-10-28 17:29:57,649 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 168 [2020-10-28 17:29:57,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:57,649 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2020-10-28 17:29:57,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:29:57,649 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2020-10-28 17:29:57,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 17:29:57,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:57,651 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 8, 8, 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, 1, 1] [2020-10-28 17:29:57,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 17:29:57,651 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:57,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:57,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1515681509, now seen corresponding path program 19 times [2020-10-28 17:29:57,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:57,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757574239] [2020-10-28 17:29:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:57,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:57,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:57,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:58,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:01,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:02,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:02,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:02,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 17:30:02,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:30:02,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-28 17:30:02,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:02,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:30:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:30:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:30:02,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:02,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:02,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:02,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:02,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:02,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:02,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:30:02,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:02,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:02,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:02,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:30:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:02,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:02,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:02,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:02,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:02,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:30:02,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:02,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:02,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:02,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:02,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:02,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:02,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:30:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:02,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:02,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:02,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:02,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:02,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:30:02,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:02,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:02,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:02,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-28 17:30:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:02,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:02,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:02,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:02,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:02,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:30:02,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:02,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:02,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:02,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:02,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:02,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1934 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2020-10-28 17:30:02,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757574239] [2020-10-28 17:30:02,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:02,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:30:02,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052505407] [2020-10-28 17:30:02,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:30:02,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:02,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:30:02,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:30:02,958 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand 12 states. [2020-10-28 17:30:03,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:03,135 INFO L93 Difference]: Finished difference Result 162 states and 190 transitions. [2020-10-28 17:30:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:30:03,136 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 180 [2020-10-28 17:30:03,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:03,137 INFO L225 Difference]: With dead ends: 162 [2020-10-28 17:30:03,137 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 17:30:03,138 INFO L677 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 [2020-10-28 17:30:03,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 17:30:03,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-28 17:30:03,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 17:30:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2020-10-28 17:30:03,146 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 180 [2020-10-28 17:30:03,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:03,146 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2020-10-28 17:30:03,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:30:03,146 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2020-10-28 17:30:03,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-28 17:30:03,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:03,150 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 9, 9, 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, 1, 1] [2020-10-28 17:30:03,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 17:30:03,150 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:03,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:03,152 INFO L82 PathProgramCache]: Analyzing trace with hash -2107469145, now seen corresponding path program 20 times [2020-10-28 17:30:03,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:03,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267935878] [2020-10-28 17:30:03,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:03,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:03,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:03,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:03,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:04,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:07,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:08,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:08,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 17:30:08,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:30:08,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 17:30:08,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:08,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:08,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:30:08,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:30:08,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:30:08,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:08,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:08,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:08,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:08,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:08,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:08,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:08,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:08,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:08,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:08,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:08,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:08,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:08,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:30:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:08,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:08,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:08,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:08,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:08,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:30:08,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:08,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:08,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:08,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 17:30:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:08,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:08,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:08,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:08,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:30:08,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:08,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:08,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:08,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 17:30:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:08,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:08,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:08,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:08,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:08,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:30:08,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:08,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:08,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:08,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:08,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:08,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1951 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2020-10-28 17:30:08,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267935878] [2020-10-28 17:30:08,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:08,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:30:08,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334701710] [2020-10-28 17:30:08,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:30:08,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:08,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:30:08,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:30:08,456 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand 13 states. [2020-10-28 17:30:08,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:08,651 INFO L93 Difference]: Finished difference Result 163 states and 191 transitions. [2020-10-28 17:30:08,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:30:08,652 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 182 [2020-10-28 17:30:08,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:08,653 INFO L225 Difference]: With dead ends: 163 [2020-10-28 17:30:08,653 INFO L226 Difference]: Without dead ends: 95 [2020-10-28 17:30:08,654 INFO L677 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 [2020-10-28 17:30:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-28 17:30:08,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-28 17:30:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 17:30:08,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2020-10-28 17:30:08,662 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 182 [2020-10-28 17:30:08,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:08,662 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2020-10-28 17:30:08,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:30:08,662 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2020-10-28 17:30:08,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-28 17:30:08,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:08,664 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 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, 1, 1] [2020-10-28 17:30:08,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 17:30:08,664 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:08,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:08,665 INFO L82 PathProgramCache]: Analyzing trace with hash -736770583, now seen corresponding path program 21 times [2020-10-28 17:30:08,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:08,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868188950] [2020-10-28 17:30:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:08,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:08,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:08,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:10,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:11,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:13,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:13,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-28 17:30:13,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:30:13,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 17:30:13,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:13,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:13,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:30:13,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-28 17:30:13,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:30:13,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:13,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:13,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:13,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:13,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:13,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:13,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:13,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:13,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:13,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:13,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:13,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:13,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:13,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:30:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:13,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:13,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:13,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:13,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:13,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:30:13,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:13,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:13,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:13,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:13,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:13,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:13,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:30:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:13,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:13,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:13,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:13,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:13,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:30:13,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:13,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:13,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:13,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:13,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:13,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:13,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 17:30:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:13,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:13,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:13,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:13,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:13,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:30:13,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:13,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:13,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2020-10-28 17:30:13,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868188950] [2020-10-28 17:30:13,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:13,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:30:13,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857693660] [2020-10-28 17:30:13,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:30:13,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:13,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:30:13,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:30:13,902 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 9 states. [2020-10-28 17:30:14,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:14,018 INFO L93 Difference]: Finished difference Result 151 states and 176 transitions. [2020-10-28 17:30:14,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:30:14,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 184 [2020-10-28 17:30:14,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:14,023 INFO L225 Difference]: With dead ends: 151 [2020-10-28 17:30:14,023 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 17:30:14,024 INFO L677 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 [2020-10-28 17:30:14,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 17:30:14,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-28 17:30:14,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 17:30:14,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2020-10-28 17:30:14,031 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 184 [2020-10-28 17:30:14,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:14,032 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2020-10-28 17:30:14,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:30:14,032 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2020-10-28 17:30:14,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-28 17:30:14,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:14,033 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 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] [2020-10-28 17:30:14,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 17:30:14,034 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:14,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:14,034 INFO L82 PathProgramCache]: Analyzing trace with hash 626211271, now seen corresponding path program 22 times [2020-10-28 17:30:14,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:14,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237282034] [2020-10-28 17:30:14,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:14,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:14,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:14,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:16,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:17,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:18,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:19,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:19,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-28 17:30:19,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:30:19,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 17:30:19,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:19,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:30:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-28 17:30:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:30:19,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:19,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:19,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:19,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:19,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:19,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:19,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:19,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:19,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:19,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:19,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:19,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:19,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:19,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:30:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:19,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:19,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:19,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:19,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:19,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:30:19,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:19,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:19,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:19,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:19,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:30:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:19,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:19,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:19,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:19,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:19,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:30:19,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:19,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:19,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:19,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-28 17:30:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:19,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:19,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:19,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:19,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:19,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:30:19,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:19,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:19,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:19,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:19,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:19,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2020-10-28 17:30:19,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237282034] [2020-10-28 17:30:19,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:19,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:30:19,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436938542] [2020-10-28 17:30:19,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:30:19,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:19,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:30:19,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:30:19,302 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand 10 states. [2020-10-28 17:30:19,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:19,451 INFO L93 Difference]: Finished difference Result 153 states and 178 transitions. [2020-10-28 17:30:19,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:30:19,452 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 186 [2020-10-28 17:30:19,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:19,453 INFO L225 Difference]: With dead ends: 153 [2020-10-28 17:30:19,453 INFO L226 Difference]: Without dead ends: 100 [2020-10-28 17:30:19,454 INFO L677 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 [2020-10-28 17:30:19,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-28 17:30:19,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-28 17:30:19,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 17:30:19,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2020-10-28 17:30:19,461 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 186 [2020-10-28 17:30:19,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:19,462 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2020-10-28 17:30:19,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:30:19,462 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2020-10-28 17:30:19,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-28 17:30:19,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:19,464 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 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, 1, 1] [2020-10-28 17:30:19,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 17:30:19,465 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:19,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:19,465 INFO L82 PathProgramCache]: Analyzing trace with hash 486747685, now seen corresponding path program 23 times [2020-10-28 17:30:19,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:19,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510723300] [2020-10-28 17:30:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:19,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:19,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:20,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:21,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:24,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:24,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-28 17:30:24,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:30:24,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-28 17:30:24,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:24,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:30:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-28 17:30:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:30:24,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:24,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:24,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:24,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:24,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:24,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:24,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:24,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:24,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:24,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:24,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:24,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:30:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:24,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:24,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:24,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:24,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:24,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:30:24,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:24,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:24,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:24,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:24,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:24,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:24,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:30:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:24,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:24,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:24,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:24,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:24,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:30:24,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:24,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:24,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:24,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:24,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:24,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:24,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 17:30:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:24,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:24,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:24,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:24,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:24,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:30:24,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:24,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:24,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:24,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:24,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:24,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2020-10-28 17:30:24,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510723300] [2020-10-28 17:30:24,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:24,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:30:24,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997956778] [2020-10-28 17:30:24,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:30:24,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:24,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:30:24,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:30:24,769 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand 11 states. [2020-10-28 17:30:24,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:24,925 INFO L93 Difference]: Finished difference Result 155 states and 180 transitions. [2020-10-28 17:30:24,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:30:24,926 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 188 [2020-10-28 17:30:24,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:24,927 INFO L225 Difference]: With dead ends: 155 [2020-10-28 17:30:24,927 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 17:30:24,928 INFO L677 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 [2020-10-28 17:30:24,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 17:30:24,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-28 17:30:24,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-28 17:30:24,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2020-10-28 17:30:24,935 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 188 [2020-10-28 17:30:24,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:24,936 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2020-10-28 17:30:24,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:30:24,936 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2020-10-28 17:30:24,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-28 17:30:24,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:24,938 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 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, 1, 1] [2020-10-28 17:30:24,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 17:30:24,938 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:24,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:24,938 INFO L82 PathProgramCache]: Analyzing trace with hash -393772285, now seen corresponding path program 24 times [2020-10-28 17:30:24,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:24,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854314219] [2020-10-28 17:30:24,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:24,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:25,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:26,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:28,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:29,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:29,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-28 17:30:29,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:30:29,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 17:30:29,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:29,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:30:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 17:30:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 17:30:29,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:30,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:30,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:30,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:30,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:30,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:30,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:30:30,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:30,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:30,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:30,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:30,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:30,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:30,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:30:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:30,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:30,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:30,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:30,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:30,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:30,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-28 17:30:30,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:30,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:30,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:30:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:30:30,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:30,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:30:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:30,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:30,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:31,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:31,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:31,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:31,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-28 17:30:31,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:31,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:31,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:30:31,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:30:31,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 17:30:31,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:31,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 17:30:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:31,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:31,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:31,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:31,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:31,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:30:31,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:31,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:31,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:31,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:31,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:31,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2009 backedges. 0 proven. 1069 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2020-10-28 17:30:31,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854314219] [2020-10-28 17:30:31,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:31,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:30:31,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587490119] [2020-10-28 17:30:31,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:30:31,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:31,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:30:31,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:30:31,509 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand 15 states. [2020-10-28 17:30:32,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:32,144 INFO L93 Difference]: Finished difference Result 224 states and 263 transitions. [2020-10-28 17:30:32,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:30:32,145 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 190 [2020-10-28 17:30:32,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:32,147 INFO L225 Difference]: With dead ends: 224 [2020-10-28 17:30:32,148 INFO L226 Difference]: Without dead ends: 153 [2020-10-28 17:30:32,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:30:32,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-28 17:30:32,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 145. [2020-10-28 17:30:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-28 17:30:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2020-10-28 17:30:32,172 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 190 [2020-10-28 17:30:32,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:32,173 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2020-10-28 17:30:32,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:30:32,173 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2020-10-28 17:30:32,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-28 17:30:32,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:32,175 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 10, 10, 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, 1, 1, 1] [2020-10-28 17:30:32,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 17:30:32,175 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:32,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:32,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1432356859, now seen corresponding path program 1 times [2020-10-28 17:30:32,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:32,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962410807] [2020-10-28 17:30:32,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:32,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:32,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:36,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:37,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:37,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-28 17:30:37,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:30:37,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 17:30:37,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:37,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:37,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:30:37,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-28 17:30:37,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:30:37,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:37,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:37,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:37,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:37,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:37,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:37,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:37,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:37,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:37,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:30:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:37,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:37,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:37,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:37,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:37,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:30:37,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:37,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:37,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:37,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:37,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:37,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:37,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:30:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:37,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:37,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:37,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:37,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:37,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:30:37,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:37,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:37,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:37,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 17:30:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:37,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:37,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:37,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:37,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:37,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:30:37,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:37,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:37,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:37,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:37,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2009 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2020-10-28 17:30:37,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962410807] [2020-10-28 17:30:37,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:37,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:30:37,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797512846] [2020-10-28 17:30:37,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:30:37,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:37,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:30:37,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:30:37,453 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand 12 states. [2020-10-28 17:30:37,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:37,618 INFO L93 Difference]: Finished difference Result 242 states and 290 transitions. [2020-10-28 17:30:37,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:30:37,618 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 190 [2020-10-28 17:30:37,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:37,622 INFO L225 Difference]: With dead ends: 242 [2020-10-28 17:30:37,622 INFO L226 Difference]: Without dead ends: 147 [2020-10-28 17:30:37,623 INFO L677 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 [2020-10-28 17:30:37,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-28 17:30:37,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-10-28 17:30:37,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-28 17:30:37,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2020-10-28 17:30:37,641 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 190 [2020-10-28 17:30:37,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:37,641 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2020-10-28 17:30:37,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:30:37,641 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2020-10-28 17:30:37,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-28 17:30:37,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:37,643 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 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, 1, 1, 1] [2020-10-28 17:30:37,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 17:30:37,644 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:37,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:37,645 INFO L82 PathProgramCache]: Analyzing trace with hash -2112269085, now seen corresponding path program 2 times [2020-10-28 17:30:37,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:37,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997219634] [2020-10-28 17:30:37,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:37,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:39,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:40,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:42,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:43,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:43,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-28 17:30:43,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:30:43,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5811 [2020-10-28 17:30:43,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:43,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 74 [2020-10-28 17:30:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 17:30:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-28 17:30:43,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:44,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:44,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:44,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:44,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:44,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:44,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:30:44,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:44,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:44,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:44,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:30:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:44,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:44,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:44,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:45,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:45,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:45,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:30:45,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1450 [2020-10-28 17:30:45,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:45,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:45,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-28 17:30:45,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:45,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:30:45,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:47,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:30:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:47,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:47,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:47,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:47,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:47,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:48,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:49,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:49,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:49,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:49,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:30:49,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2630 [2020-10-28 17:30:49,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:49,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:49,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:30:49,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:49,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:30:49,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:50,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 17:30:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:50,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:50,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:50,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:50,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:50,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:50,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:30:50,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-28 17:30:50,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:50,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:50,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:30:50,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:30:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 17:30:50,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 78 proven. 1233 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2020-10-28 17:30:51,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997219634] [2020-10-28 17:30:51,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:51,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-28 17:30:51,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971559297] [2020-10-28 17:30:51,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-28 17:30:51,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:51,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-28 17:30:51,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=2370, Unknown=0, NotChecked=0, Total=2652 [2020-10-28 17:30:51,443 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 52 states. [2020-10-28 17:30:57,846 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-28 17:31:00,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:00,057 INFO L93 Difference]: Finished difference Result 459 states and 581 transitions. [2020-10-28 17:31:00,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-28 17:31:00,058 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 192 [2020-10-28 17:31:00,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:00,064 INFO L225 Difference]: With dead ends: 459 [2020-10-28 17:31:00,064 INFO L226 Difference]: Without dead ends: 453 [2020-10-28 17:31:00,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 9 SyntacticMatches, 9 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4561 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1519, Invalid=14737, Unknown=0, NotChecked=0, Total=16256 [2020-10-28 17:31:00,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-10-28 17:31:00,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 291. [2020-10-28 17:31:00,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-28 17:31:00,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 379 transitions. [2020-10-28 17:31:00,147 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 379 transitions. Word has length 192 [2020-10-28 17:31:00,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:00,148 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 379 transitions. [2020-10-28 17:31:00,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-28 17:31:00,148 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 379 transitions. [2020-10-28 17:31:00,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-28 17:31:00,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:00,155 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 10, 10, 9, 9, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:31:00,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 17:31:00,156 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:00,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:00,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1854103647, now seen corresponding path program 3 times [2020-10-28 17:31:00,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:00,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319508411] [2020-10-28 17:31:00,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:00,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:01,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:03,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:05,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:05,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-28 17:31:05,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:31:05,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 17:31:05,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:05,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 68 [2020-10-28 17:31:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 17:31:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-28 17:31:05,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:06,094 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-28 17:31:06,273 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-10-28 17:31:06,468 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-28 17:31:06,680 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-28 17:31:06,942 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-10-28 17:31:07,166 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-28 17:31:07,447 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-10-28 17:31:07,686 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2020-10-28 17:31:07,928 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-10-28 17:31:08,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:08,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:08,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:08,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:31:08,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:08,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:08,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:31:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:08,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:08,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:09,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:09,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:09,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:09,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1466 [2020-10-28 17:31:09,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:09,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:31:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:31:09,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:12,839 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2020-10-28 17:31:12,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:31:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:12,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:13,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:14,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:14,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:14,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:14,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1379 [2020-10-28 17:31:14,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:14,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:31:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:31:14,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:14,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 17:31:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:14,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:15,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:15,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:15,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:15,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:15,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-10-28 17:31:15,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:15,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:31:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:15,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:31:15,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 64 proven. 1260 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2020-10-28 17:31:17,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319508411] [2020-10-28 17:31:17,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:17,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-28 17:31:17,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167775330] [2020-10-28 17:31:17,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-28 17:31:17,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:17,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-28 17:31:17,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1684, Unknown=0, NotChecked=0, Total=1892 [2020-10-28 17:31:17,298 INFO L87 Difference]: Start difference. First operand 291 states and 379 transitions. Second operand 44 states. [2020-10-28 17:31:23,909 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-10-28 17:31:24,111 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-28 17:31:24,379 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-28 17:31:24,691 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-28 17:31:26,011 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-28 17:31:26,738 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-28 17:31:27,535 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-28 17:31:27,813 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2020-10-28 17:31:28,875 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2020-10-28 17:31:29,350 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44