/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=DEEPEST --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/avg10-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:40:12,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:40:12,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:40:12,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:40:12,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:40:12,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:40:12,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:40:12,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:40:12,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:40:12,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:40:12,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:40:12,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:40:12,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:40:12,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:40:12,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:40:12,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:40:12,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:40:12,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:40:12,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:40:12,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:40:12,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:40:12,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:40:12,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:40:12,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:40:12,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:40:12,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:40:12,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:40:12,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:40:12,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:40:12,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:40:12,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:40:12,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:40:12,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:40:12,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:40:12,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:40:12,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:40:12,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:40:12,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:40:12,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:40:12,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:40:12,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:40:12,204 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 [2020-10-27 22:40:12,239 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:40:12,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:40:12,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:40:12,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:40:12,243 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:40:12,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:40:12,245 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:40:12,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:40:12,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:40:12,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:40:12,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:40:12,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:40:12,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:40:12,247 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:40:12,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:40:12,248 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:40:12,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:40:12,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:40:12,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:40:12,249 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:40:12,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:40:12,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:40:12,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:40:12,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:40:12,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:40:12,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:40:12,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:40:12,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:40:12,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:40:12,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:40:12,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:40:12,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:40:12,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:40:12,719 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:40:12,720 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:40:12,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg10-2.i [2020-10-27 22:40:12,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd578dd93/00fad7a7d75e4406a35f01c0379d13de/FLAG8d7114270 [2020-10-27 22:40:13,554 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:40:13,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/avg10-2.i [2020-10-27 22:40:13,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd578dd93/00fad7a7d75e4406a35f01c0379d13de/FLAG8d7114270 [2020-10-27 22:40:13,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd578dd93/00fad7a7d75e4406a35f01c0379d13de [2020-10-27 22:40:13,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:40:13,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:40:13,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:40:13,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:40:13,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:40:13,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:40:13" (1/1) ... [2020-10-27 22:40:13,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1502a49e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:13, skipping insertion in model container [2020-10-27 22:40:13,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:40:13" (1/1) ... [2020-10-27 22:40:13,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:40:13,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:40:14,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:40:14,115 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:40:14,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:40:14,157 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:40:14,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14 WrapperNode [2020-10-27 22:40:14,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:40:14,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:40:14,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:40:14,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:40:14,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (1/1) ... [2020-10-27 22:40:14,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (1/1) ... [2020-10-27 22:40:14,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (1/1) ... [2020-10-27 22:40:14,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (1/1) ... [2020-10-27 22:40:14,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (1/1) ... [2020-10-27 22:40:14,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (1/1) ... [2020-10-27 22:40:14,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (1/1) ... [2020-10-27 22:40:14,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:40:14,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:40:14,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:40:14,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:40:14,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (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 [2020-10-27 22:40:14,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:40:14,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:40:14,288 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:40:14,288 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2020-10-27 22:40:14,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:40:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:40:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:40:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 22:40:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 22:40:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:40:14,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:40:14,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 22:40:14,293 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2020-10-27 22:40:14,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:40:14,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:40:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:40:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:40:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:40:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:40:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:40:14,853 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:40:14,854 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 22:40:14,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:40:14 BoogieIcfgContainer [2020-10-27 22:40:14,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:40:14,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:40:14,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:40:14,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:40:14,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:40:13" (1/3) ... [2020-10-27 22:40:14,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0bc952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:40:14, skipping insertion in model container [2020-10-27 22:40:14,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:40:14" (2/3) ... [2020-10-27 22:40:14,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0bc952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:40:14, skipping insertion in model container [2020-10-27 22:40:14,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:40:14" (3/3) ... [2020-10-27 22:40:14,866 INFO L111 eAbstractionObserver]: Analyzing ICFG avg10-2.i [2020-10-27 22:40:14,881 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:40:14,887 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:40:14,903 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:40:14,945 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:40:14,945 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:40:14,945 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:40:14,945 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:40:14,946 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:40:14,946 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:40:14,946 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:40:14,946 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:40:14,971 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 22:40:14,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 22:40:14,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:14,982 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] [2020-10-27 22:40:14,983 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:14,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:14,993 INFO L82 PathProgramCache]: Analyzing trace with hash 585288593, now seen corresponding path program 1 times [2020-10-27 22:40:15,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:15,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126532728] [2020-10-27 22:40:15,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:15,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:15,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:15,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:15,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:16,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:17,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:17,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:40:17,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:40:17,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1822 [2020-10-27 22:40:17,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:17,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:17,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 22:40:17,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:17,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:40:17,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:17,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:17,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:17,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:17,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:17,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:40:17,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:17,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:17,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:40:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:17,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:17,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:17,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:17,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:40:17,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:17,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:40:17,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:40:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:17,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:17,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 22:40:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:17,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:17,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:17,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:17,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:40:17,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:17,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:40:17,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:40:17,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:17,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:40:17,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:40:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:17,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:17,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:17,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:40:17,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:17,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:40:17,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:40:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:17,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:40:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 22:40:17,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126532728] [2020-10-27 22:40:17,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:40:17,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 22:40:17,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122071711] [2020-10-27 22:40:17,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 22:40:17,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:17,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 22:40:17,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 22:40:17,288 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-27 22:40:17,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:17,449 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-27 22:40:17,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 22:40:17,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 22:40:17,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:17,460 INFO L225 Difference]: With dead ends: 60 [2020-10-27 22:40:17,460 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 22:40:17,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 22:40:17,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 22:40:17,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 22:40:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 22:40:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-27 22:40:17,513 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-27 22:40:17,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:17,513 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-27 22:40:17,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 22:40:17,514 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-27 22:40:17,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 22:40:17,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:17,517 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] [2020-10-27 22:40:17,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:40:17,517 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:17,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:17,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1339353745, now seen corresponding path program 1 times [2020-10-27 22:40:17,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:17,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100702541] [2020-10-27 22:40:17,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:17,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:17,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:17,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:17,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:17,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:18,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:19,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:19,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:40:19,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:40:19,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2351 [2020-10-27 22:40:19,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:19,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:40:19,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 22:40:19,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:40:19,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:19,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:19,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:19,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:19,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:19,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:19,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:40:19,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:19,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:19,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:19,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:19,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:40:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:19,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:19,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:19,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:19,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:40:19,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:19,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:40:19,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:40:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:40:19,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:19,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 22:40:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:19,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:19,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:20,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:20,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:40:20,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:20,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 22:40:20,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:20,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:40:20,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:20,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:40:20,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:20,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:40:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:20,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:20,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:20,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:40:20,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:20,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:40:20,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:40:20,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:20,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:40:20,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:20,033 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 22:40:20,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100702541] [2020-10-27 22:40:20,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:40:20,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:40:20,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055987439] [2020-10-27 22:40:20,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:40:20,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:20,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:40:20,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:40:20,039 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-27 22:40:20,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:20,157 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-27 22:40:20,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:40:20,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-27 22:40:20,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:20,159 INFO L225 Difference]: With dead ends: 49 [2020-10-27 22:40:20,160 INFO L226 Difference]: Without dead ends: 30 [2020-10-27 22:40:20,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 22:40:20,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-27 22:40:20,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-27 22:40:20,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 22:40:20,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-27 22:40:20,171 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-27 22:40:20,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:20,172 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-27 22:40:20,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:40:20,172 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-27 22:40:20,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 22:40:20,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:20,174 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:20,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:40:20,174 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:20,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:20,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1111227151, now seen corresponding path program 1 times [2020-10-27 22:40:20,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:20,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769964316] [2020-10-27 22:40:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:20,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:20,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:20,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:20,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:20,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:25,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:25,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 22:40:25,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:40:25,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4904 [2020-10-27 22:40:25,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:25,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:40:25,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 22:40:25,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:40:25,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:40:25,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:25,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:25,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:25,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:25,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:25,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:40:25,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:25,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:25,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:25,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:25,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:25,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:40:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:25,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:25,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:25,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:25,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:40:25,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:25,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 22:40:25,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:40:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:40:25,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:25,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 22:40:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:25,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:25,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:25,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:40:25,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:25,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 22:40:25,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:25,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:40:25,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:25,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:40:25,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:25,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 22:40:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:25,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:25,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:25,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:40:25,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:25,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 22:40:25,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:40:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:40:25,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 22:40:25,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769964316] [2020-10-27 22:40:25,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:40:25,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 22:40:25,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693365657] [2020-10-27 22:40:25,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 22:40:25,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:25,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 22:40:25,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 22:40:25,302 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-27 22:40:25,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:25,460 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-27 22:40:25,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 22:40:25,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-27 22:40:25,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:25,462 INFO L225 Difference]: With dead ends: 52 [2020-10-27 22:40:25,462 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 22:40:25,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:40:25,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 22:40:25,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-27 22:40:25,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 22:40:25,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 22:40:25,472 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 40 [2020-10-27 22:40:25,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:25,472 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 22:40:25,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 22:40:25,473 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 22:40:25,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 22:40:25,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:25,475 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:25,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:40:25,475 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:25,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:25,476 INFO L82 PathProgramCache]: Analyzing trace with hash 51803405, now seen corresponding path program 2 times [2020-10-27 22:40:25,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:25,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116153483] [2020-10-27 22:40:25,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:25,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:25,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:25,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:25,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:26,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:30,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:30,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 22:40:30,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:40:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 22:40:30,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:40:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 22:40:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:40:30,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:30,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:30,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:30,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:30,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:30,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:30,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:40:30,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:30,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:40:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:30,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:30,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:30,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:30,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 22:40:30,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:30,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 22:40:30,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:30,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:40:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:40:30,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:40:30,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 22:40:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:30,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:30,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:30,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:30,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 22:40:30,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:30,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 22:40:30,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:30,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:40:30,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:30,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:40:30,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:30,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:40:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:30,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:30,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:30,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 22:40:30,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:30,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 22:40:30,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:40:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:30,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:40:30,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 22:40:30,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116153483] [2020-10-27 22:40:30,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:40:30,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 22:40:30,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364116906] [2020-10-27 22:40:30,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:40:30,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:30,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:40:30,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:40:30,726 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-27 22:40:30,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:30,941 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-27 22:40:30,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:40:30,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-27 22:40:30,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:30,943 INFO L225 Difference]: With dead ends: 56 [2020-10-27 22:40:30,943 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 22:40:30,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:40:30,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 22:40:30,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-27 22:40:30,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 22:40:30,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 22:40:30,954 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-27 22:40:30,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:30,955 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 22:40:30,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:40:30,956 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 22:40:30,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 22:40:30,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:30,958 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:30,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:40:30,958 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:30,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:30,959 INFO L82 PathProgramCache]: Analyzing trace with hash 790018187, now seen corresponding path program 3 times [2020-10-27 22:40:30,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:30,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355931649] [2020-10-27 22:40:30,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:30,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:30,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:31,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:31,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:32,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:35,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:35,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 22:40:35,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:40:35,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 22:40:35,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:40:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 22:40:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:40:35,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:36,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:36,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:36,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:36,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:36,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:36,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:40:36,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:36,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:36,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:36,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:36,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:36,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:40:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:36,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:36,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:36,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:36,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:40:36,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:36,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 22:40:36,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:36,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:40:36,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:36,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:40:36,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:40:36,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 22:40:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:36,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:36,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:36,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:40:36,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:36,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 22:40:36,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:40:36,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:36,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:40:36,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:36,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:40:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:36,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:36,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:40:36,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:36,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 22:40:36,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:36,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:40:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:40:36,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:40:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 22:40:36,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355931649] [2020-10-27 22:40:36,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:40:36,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 22:40:36,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163936896] [2020-10-27 22:40:36,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 22:40:36,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:36,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 22:40:36,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:40:36,252 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-10-27 22:40:36,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:36,472 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-27 22:40:36,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:40:36,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-27 22:40:36,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:36,474 INFO L225 Difference]: With dead ends: 60 [2020-10-27 22:40:36,474 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 22:40:36,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:40:36,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 22:40:36,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-27 22:40:36,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 22:40:36,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-27 22:40:36,482 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 52 [2020-10-27 22:40:36,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:36,483 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-27 22:40:36,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 22:40:36,483 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-27 22:40:36,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 22:40:36,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:36,484 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:36,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:40:36,485 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:36,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:36,485 INFO L82 PathProgramCache]: Analyzing trace with hash -804838007, now seen corresponding path program 4 times [2020-10-27 22:40:36,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:36,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097778183] [2020-10-27 22:40:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:36,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:36,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:36,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:36,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:38,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:41,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:41,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 22:40:41,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:40:41,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 22:40:41,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:40:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 22:40:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:40:41,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:40:41,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:41,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:41,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:41,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:41,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:41,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:40:41,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:41,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:41,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:40:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:41,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:41,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:41,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:41,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 22:40:41,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:41,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 22:40:41,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:41,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:40:41,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:41,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:40:41,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:41,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 22:40:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:41,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:41,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:41,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:41,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 22:40:41,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:41,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 22:40:41,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:41,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:40:41,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:40:41,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:41,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 22:40:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:41,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:41,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:41,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 22:40:41,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:41,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 22:40:41,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:40:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:40:41,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:41,797 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 22:40:41,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097778183] [2020-10-27 22:40:41,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:40:41,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 22:40:41,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392584715] [2020-10-27 22:40:41,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:40:41,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:41,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:40:41,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:40:41,803 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-10-27 22:40:42,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:42,072 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-27 22:40:42,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 22:40:42,073 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-27 22:40:42,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:42,074 INFO L225 Difference]: With dead ends: 64 [2020-10-27 22:40:42,074 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 22:40:42,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:40:42,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 22:40:42,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-27 22:40:42,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 22:40:42,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-27 22:40:42,086 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 58 [2020-10-27 22:40:42,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:42,087 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-27 22:40:42,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:40:42,087 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-27 22:40:42,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 22:40:42,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:42,091 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:42,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:40:42,091 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:42,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:42,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1925848071, now seen corresponding path program 5 times [2020-10-27 22:40:42,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:42,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41188175] [2020-10-27 22:40:42,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:42,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:42,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:42,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:42,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:44,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:47,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:47,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 22:40:47,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:40:47,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 22:40:47,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:47,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:40:47,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 22:40:47,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:40:47,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:47,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:47,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:47,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:47,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:47,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:47,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:40:47,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:40:47,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:40:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:47,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:47,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:47,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:47,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:40:47,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:47,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 22:40:47,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:40:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:40:47,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:40:47,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 22:40:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:47,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:47,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:47,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:47,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:40:47,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:47,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 22:40:47,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:47,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:40:47,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:40:47,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:47,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 22:40:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:47,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:47,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:47,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:40:47,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:47,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 22:40:47,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:47,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:40:47,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:47,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:40:47,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:47,451 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 22:40:47,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41188175] [2020-10-27 22:40:47,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:40:47,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:40:47,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968159420] [2020-10-27 22:40:47,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:40:47,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:47,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:40:47,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:40:47,454 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 9 states. [2020-10-27 22:40:47,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:47,734 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-27 22:40:47,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 22:40:47,735 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-27 22:40:47,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:47,736 INFO L225 Difference]: With dead ends: 68 [2020-10-27 22:40:47,736 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 22:40:47,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:40:47,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 22:40:47,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-27 22:40:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 22:40:47,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-27 22:40:47,744 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-27 22:40:47,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:47,745 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-27 22:40:47,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:40:47,745 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-27 22:40:47,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 22:40:47,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:47,746 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:47,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:40:47,747 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:47,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:47,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1118176251, now seen corresponding path program 6 times [2020-10-27 22:40:47,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:47,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008708958] [2020-10-27 22:40:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:47,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:47,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:47,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:47,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:51,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:52,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:52,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 22:40:52,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:40:52,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 22:40:52,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:52,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:40:52,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 22:40:52,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:40:52,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:52,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:52,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:52,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:52,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:52,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:52,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:40:52,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:52,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:52,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:52,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:52,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:40:52,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:40:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:52,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:52,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:52,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:52,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:40:52,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:52,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 22:40:52,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:40:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:40:52,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:52,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 22:40:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:52,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:52,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:53,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:53,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:40:53,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:53,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 22:40:53,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:53,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:40:53,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:40:53,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:53,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:40:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:53,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:53,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:40:53,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:53,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 22:40:53,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:40:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:40:53,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:53,150 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 22:40:53,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008708958] [2020-10-27 22:40:53,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:40:53,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 22:40:53,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923497550] [2020-10-27 22:40:53,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:40:53,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:53,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:40:53,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:40:53,152 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 10 states. [2020-10-27 22:40:53,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:53,445 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-27 22:40:53,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:40:53,445 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-27 22:40:53,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:53,447 INFO L225 Difference]: With dead ends: 72 [2020-10-27 22:40:53,447 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 22:40:53,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:40:53,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 22:40:53,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-27 22:40:53,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 22:40:53,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-27 22:40:53,460 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 70 [2020-10-27 22:40:53,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:53,461 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-27 22:40:53,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:40:53,461 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-27 22:40:53,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 22:40:53,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:53,465 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:53,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:40:53,465 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:53,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:53,466 INFO L82 PathProgramCache]: Analyzing trace with hash -2067192445, now seen corresponding path program 7 times [2020-10-27 22:40:53,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:53,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257958987] [2020-10-27 22:40:53,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:53,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:53,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:53,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:53,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:57,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:58,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:58,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 22:40:58,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:40:58,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 22:40:58,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:58,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:40:58,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 22:40:58,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:40:58,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:58,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:40:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:58,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:58,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:58,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:40:58,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:58,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:40:58,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:58,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:40:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:40:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:40:58,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:58,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:40:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:58,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:58,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:58,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:58,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 22:40:58,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:58,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 22:40:58,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:40:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:40:58,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:58,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:40:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:58,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:58,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:58,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:58,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 22:40:58,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:40:58,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 22:40:58,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:40:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:40:58,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:58,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:40:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:58,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:58,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:40:58,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 22:40:58,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:40:58,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 22:40:58,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:40:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:40:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:40:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:40:58,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:40:58,913 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 22:40:58,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257958987] [2020-10-27 22:40:58,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:40:58,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 22:40:58,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832590977] [2020-10-27 22:40:58,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:40:58,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:40:58,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:40:58,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:40:58,924 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2020-10-27 22:40:59,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:40:59,332 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-27 22:40:59,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 22:40:59,333 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-27 22:40:59,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:40:59,334 INFO L225 Difference]: With dead ends: 76 [2020-10-27 22:40:59,334 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 22:40:59,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:40:59,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 22:40:59,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-27 22:40:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 22:40:59,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-27 22:40:59,344 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 76 [2020-10-27 22:40:59,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:40:59,345 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-27 22:40:59,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:40:59,345 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-27 22:40:59,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 22:40:59,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:40:59,346 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:40:59,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:40:59,346 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:40:59,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:40:59,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1665267841, now seen corresponding path program 8 times [2020-10-27 22:40:59,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:40:59,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399363516] [2020-10-27 22:40:59,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:40:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:40:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:59,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:59,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:40:59,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:04,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:04,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 22:41:04,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:41:04,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 22:41:04,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:41:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-27 22:41:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:41:04,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:04,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:04,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:04,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:04,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:04,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:04,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:04,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:04,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:04,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:04,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:04,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:04,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:04,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:04,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:04,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:41:04,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:04,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 22:41:04,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:04,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:41:04,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:04,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:41:04,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:04,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 22:41:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:04,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:04,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:04,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:04,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:41:04,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:04,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 22:41:04,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:04,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:41:04,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:04,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:41:04,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:04,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 22:41:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:04,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:04,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:04,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:04,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:41:04,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 22:41:04,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 22:41:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 64 proven. 488 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-27 22:41:04,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399363516] [2020-10-27 22:41:04,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:04,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 22:41:04,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926939055] [2020-10-27 22:41:04,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:41:04,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:04,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:41:04,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:41:04,843 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-27 22:41:05,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:05,315 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2020-10-27 22:41:05,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:41:05,316 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 82 [2020-10-27 22:41:05,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:05,317 INFO L225 Difference]: With dead ends: 82 [2020-10-27 22:41:05,317 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 22:41:05,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:41:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 22:41:05,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-27 22:41:05,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 22:41:05,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-27 22:41:05,326 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 82 [2020-10-27 22:41:05,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:05,327 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-27 22:41:05,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:41:05,327 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-27 22:41:05,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 22:41:05,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:05,328 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:41:05,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:41:05,328 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:05,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:05,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1842218749, now seen corresponding path program 1 times [2020-10-27 22:41:05,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:05,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295952723] [2020-10-27 22:41:05,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:05,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:05,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:05,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:05,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:10,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:10,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 22:41:10,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:41:10,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 22:41:10,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:41:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 22:41:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:41:10,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:10,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:10,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:10,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:10,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:10,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:10,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:10,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:10,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:10,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:10,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:10,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:10,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:10,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:10,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:10,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:10,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:41:10,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:10,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 22:41:10,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:10,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:41:10,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:10,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 22:41:10,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:10,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 22:41:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:10,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:10,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:10,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:10,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:41:10,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:10,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 22:41:10,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:41:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:41:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 22:41:10,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:10,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:41:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:10,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:10,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:10,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:10,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:41:10,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:10,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 22:41:10,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 22:41:10,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:10,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 81 proven. 612 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-27 22:41:10,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295952723] [2020-10-27 22:41:10,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:10,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 22:41:10,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573126981] [2020-10-27 22:41:10,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 22:41:10,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:10,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 22:41:10,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:41:10,854 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 15 states. [2020-10-27 22:41:11,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:11,388 INFO L93 Difference]: Finished difference Result 88 states and 99 transitions. [2020-10-27 22:41:11,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:41:11,388 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 90 [2020-10-27 22:41:11,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:11,390 INFO L225 Difference]: With dead ends: 88 [2020-10-27 22:41:11,390 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 22:41:11,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2020-10-27 22:41:11,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 22:41:11,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-10-27 22:41:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 22:41:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-27 22:41:11,399 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 90 [2020-10-27 22:41:11,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:11,399 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-27 22:41:11,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 22:41:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-27 22:41:11,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 22:41:11,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:11,400 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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] [2020-10-27 22:41:11,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:41:11,401 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:11,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:11,401 INFO L82 PathProgramCache]: Analyzing trace with hash 318023801, now seen corresponding path program 2 times [2020-10-27 22:41:11,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:11,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737504608] [2020-10-27 22:41:11,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:11,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:11,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:13,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:13,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 22:41:13,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:13,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1595 [2020-10-27 22:41:13,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:41:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 22:41:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:41:13,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:13,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:13,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:13,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:13,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:13,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:41:13,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:13,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:13,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:13,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:13,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:13,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:13,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:41:13,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:13,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:13,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:41:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:13,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:13,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:13,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:13,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:13,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:41:13,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:13,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:13,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:41:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:13,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:13,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:13,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:13,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:13,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:41:13,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 22:41:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:13,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-27 22:41:13,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737504608] [2020-10-27 22:41:13,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:13,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 22:41:13,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577737663] [2020-10-27 22:41:13,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:41:13,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:13,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:41:13,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:41:13,153 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 6 states. [2020-10-27 22:41:13,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:13,258 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2020-10-27 22:41:13,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:41:13,258 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-27 22:41:13,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:13,259 INFO L225 Difference]: With dead ends: 86 [2020-10-27 22:41:13,259 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 22:41:13,260 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 [2020-10-27 22:41:13,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 22:41:13,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-27 22:41:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 22:41:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-27 22:41:13,267 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 98 [2020-10-27 22:41:13,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:13,269 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-27 22:41:13,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:41:13,269 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-27 22:41:13,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 22:41:13,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:13,270 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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] [2020-10-27 22:41:13,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:41:13,271 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:13,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:13,271 INFO L82 PathProgramCache]: Analyzing trace with hash -2130258953, now seen corresponding path program 3 times [2020-10-27 22:41:13,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:13,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849574483] [2020-10-27 22:41:13,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:13,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:13,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:14,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:14,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 22:41:14,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:14,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1393 [2020-10-27 22:41:14,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:41:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 22:41:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:41:14,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:14,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:14,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:14,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:14,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:14,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:14,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:41:14,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:14,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:14,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:14,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:14,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:14,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:14,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:14,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:41:14,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:14,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:14,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:41:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:14,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:14,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:14,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:14,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:14,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:41:14,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:14,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:14,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:14,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 22:41:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:14,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:14,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:14,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:14,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:14,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:41:14,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:14,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:14,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 22:41:14,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:14,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:14,805 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-27 22:41:14,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849574483] [2020-10-27 22:41:14,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:14,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 22:41:14,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336613209] [2020-10-27 22:41:14,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 22:41:14,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:14,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 22:41:14,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:41:14,807 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 7 states. [2020-10-27 22:41:14,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:14,920 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2020-10-27 22:41:14,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:41:14,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-27 22:41:14,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:14,922 INFO L225 Difference]: With dead ends: 88 [2020-10-27 22:41:14,922 INFO L226 Difference]: Without dead ends: 55 [2020-10-27 22:41:14,923 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 [2020-10-27 22:41:14,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-27 22:41:14,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-27 22:41:14,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 22:41:14,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-27 22:41:14,931 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 100 [2020-10-27 22:41:14,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:14,931 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-27 22:41:14,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 22:41:14,931 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-27 22:41:14,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 22:41:14,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:14,932 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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] [2020-10-27 22:41:14,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 22:41:14,933 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:14,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:14,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1287907339, now seen corresponding path program 4 times [2020-10-27 22:41:14,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:14,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821717424] [2020-10-27 22:41:14,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:14,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:14,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:17,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:17,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 22:41:17,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:17,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2528 [2020-10-27 22:41:17,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:41:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 22:41:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:41:17,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:17,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:17,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:17,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:17,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:17,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:17,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:17,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:17,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:17,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:17,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:17,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:17,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:17,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:17,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:41:17,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:17,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:17,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:41:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:17,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:17,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:17,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:17,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:17,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:41:17,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:17,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:17,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 22:41:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:17,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:17,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:17,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:17,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:17,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:41:17,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:17,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:17,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 22:41:17,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:17,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-27 22:41:17,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821717424] [2020-10-27 22:41:17,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:17,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 22:41:17,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195712969] [2020-10-27 22:41:17,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:41:17,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:17,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:41:17,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:41:17,637 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 8 states. [2020-10-27 22:41:17,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:17,814 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2020-10-27 22:41:17,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 22:41:17,815 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2020-10-27 22:41:17,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:17,816 INFO L225 Difference]: With dead ends: 90 [2020-10-27 22:41:17,816 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 22:41:17,817 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 [2020-10-27 22:41:17,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 22:41:17,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-10-27 22:41:17,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 22:41:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-10-27 22:41:17,828 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 102 [2020-10-27 22:41:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:17,829 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-10-27 22:41:17,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:41:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-10-27 22:41:17,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 22:41:17,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:17,830 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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] [2020-10-27 22:41:17,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 22:41:17,831 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:17,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:17,835 INFO L82 PathProgramCache]: Analyzing trace with hash 758142067, now seen corresponding path program 5 times [2020-10-27 22:41:17,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:17,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574812997] [2020-10-27 22:41:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:17,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:17,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:20,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:20,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 22:41:20,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:20,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2684 [2020-10-27 22:41:20,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:20,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:41:20,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 22:41:20,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:41:20,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:20,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:20,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:20,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:20,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:20,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:20,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:20,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:20,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:20,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:20,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:20,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:20,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:20,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:20,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:20,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:41:20,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:20,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:20,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:20,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:20,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:20,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:41:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:20,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:20,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:20,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:20,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:20,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:41:20,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:20,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:20,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:20,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:20,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:20,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:41:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:20,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:20,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:20,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:20,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:20,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:41:20,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:20,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:20,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 22:41:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:20,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1000 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-27 22:41:20,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574812997] [2020-10-27 22:41:20,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:20,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:41:20,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976626547] [2020-10-27 22:41:20,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:41:20,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:20,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:41:20,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:41:20,717 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 9 states. [2020-10-27 22:41:20,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:20,904 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2020-10-27 22:41:20,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 22:41:20,905 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-27 22:41:20,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:20,907 INFO L225 Difference]: With dead ends: 92 [2020-10-27 22:41:20,907 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 22:41:20,911 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 [2020-10-27 22:41:20,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 22:41:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-27 22:41:20,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 22:41:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-10-27 22:41:20,928 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 104 [2020-10-27 22:41:20,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:20,928 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-10-27 22:41:20,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:41:20,928 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-10-27 22:41:20,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 22:41:20,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:20,933 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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] [2020-10-27 22:41:20,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 22:41:20,933 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:20,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:20,934 INFO L82 PathProgramCache]: Analyzing trace with hash -83400335, now seen corresponding path program 6 times [2020-10-27 22:41:20,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:20,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835157525] [2020-10-27 22:41:20,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:20,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:20,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:23,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:23,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 22:41:23,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:23,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2943 [2020-10-27 22:41:23,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:41:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 22:41:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:41:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:23,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:23,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:23,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:23,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:23,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:23,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:41:23,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:23,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:23,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:23,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:23,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:23,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:24,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:24,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:24,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:24,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:24,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:41:24,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:24,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:24,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:24,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:24,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:24,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:41:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:24,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:24,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:24,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:24,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:24,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:41:24,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:24,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:24,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:24,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:24,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:24,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 22:41:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:24,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:24,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:24,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:24,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:24,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:41:24,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:24,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:24,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 22:41:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:24,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-27 22:41:24,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835157525] [2020-10-27 22:41:24,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:24,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 22:41:24,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125786699] [2020-10-27 22:41:24,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:41:24,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:24,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:41:24,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:41:24,109 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 10 states. [2020-10-27 22:41:24,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:24,316 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2020-10-27 22:41:24,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:41:24,318 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2020-10-27 22:41:24,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:24,320 INFO L225 Difference]: With dead ends: 94 [2020-10-27 22:41:24,320 INFO L226 Difference]: Without dead ends: 61 [2020-10-27 22:41:24,321 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 [2020-10-27 22:41:24,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-27 22:41:24,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-10-27 22:41:24,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-27 22:41:24,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-10-27 22:41:24,341 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 106 [2020-10-27 22:41:24,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:24,342 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-10-27 22:41:24,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:41:24,342 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-10-27 22:41:24,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 22:41:24,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:24,345 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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] [2020-10-27 22:41:24,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 22:41:24,345 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:24,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:24,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1351797009, now seen corresponding path program 7 times [2020-10-27 22:41:24,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:24,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547841672] [2020-10-27 22:41:24,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:24,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:24,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:27,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:27,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 22:41:27,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:27,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3381 [2020-10-27 22:41:27,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:41:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 22:41:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:41:27,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:27,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:27,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:27,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:27,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:27,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:27,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:27,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:27,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:27,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:27,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:27,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:27,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:27,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:41:27,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:27,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:27,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:27,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:27,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:27,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:41:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:27,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:27,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:27,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:27,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:27,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:41:27,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:27,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:27,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:27,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:27,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:27,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:41:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:27,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:27,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:27,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:27,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:27,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:41:27,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:27,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:27,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 22:41:27,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:27,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:27,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-27 22:41:27,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547841672] [2020-10-27 22:41:27,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:27,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 22:41:27,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999109802] [2020-10-27 22:41:27,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:41:27,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:27,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:41:27,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:41:27,956 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 11 states. [2020-10-27 22:41:28,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:28,138 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2020-10-27 22:41:28,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 22:41:28,139 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-27 22:41:28,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:28,140 INFO L225 Difference]: With dead ends: 96 [2020-10-27 22:41:28,140 INFO L226 Difference]: Without dead ends: 63 [2020-10-27 22:41:28,140 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 [2020-10-27 22:41:28,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-27 22:41:28,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-10-27 22:41:28,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 22:41:28,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-10-27 22:41:28,148 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 108 [2020-10-27 22:41:28,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:28,148 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-10-27 22:41:28,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:41:28,149 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-10-27 22:41:28,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 22:41:28,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:28,150 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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] [2020-10-27 22:41:28,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 22:41:28,150 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:28,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:28,151 INFO L82 PathProgramCache]: Analyzing trace with hash -510288659, now seen corresponding path program 8 times [2020-10-27 22:41:28,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:28,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280648137] [2020-10-27 22:41:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:28,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:28,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:31,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:31,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 22:41:31,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:31,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3627 [2020-10-27 22:41:31,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:41:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 22:41:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:41:31,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:31,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:41:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:31,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:31,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:41:31,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:31,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:41:31,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:31,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:31,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 22:41:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:31,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:31,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:31,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:31,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:31,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:41:31,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:31,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:31,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:31,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:31,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:31,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:41:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:31,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:31,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:31,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:31,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:31,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:41:31,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:41:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:31,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:31,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 22:41:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:31,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:31,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:31,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:41:31,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:41:31,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:41:31,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:41:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 22:41:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:41:31,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:41:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-27 22:41:31,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280648137] [2020-10-27 22:41:31,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:41:31,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 22:41:31,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720364189] [2020-10-27 22:41:31,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:41:31,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:41:31,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:41:31,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:41:31,984 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 12 states. [2020-10-27 22:41:32,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:41:32,124 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-27 22:41:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:41:32,125 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 110 [2020-10-27 22:41:32,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:41:32,126 INFO L225 Difference]: With dead ends: 97 [2020-10-27 22:41:32,126 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 22:41:32,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:41:32,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 22:41:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-27 22:41:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 22:41:32,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-10-27 22:41:32,143 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 110 [2020-10-27 22:41:32,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:41:32,144 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-10-27 22:41:32,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:41:32,144 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-10-27 22:41:32,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 22:41:32,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:41:32,146 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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] [2020-10-27 22:41:32,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 22:41:32,146 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:41:32,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:41:32,147 INFO L82 PathProgramCache]: Analyzing trace with hash 725384043, now seen corresponding path program 9 times [2020-10-27 22:41:32,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:41:32,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924496265] [2020-10-27 22:41:32,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:41:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:41:32,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:32,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:41:41,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:41:41,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 22:41:41,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:41:41,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9373 [2020-10-27 22:41:41,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:41:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 91 [2020-10-27 22:41:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 22:41:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 22:41:41,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:42:55,980 WARN L193 SmtUtils]: Spent 47.68 s on a formula simplification. DAG size of input: 240 DAG size of output: 158