/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/recursive/gcd02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:15:16,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:15:16,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:15:16,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:15:16,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:15:16,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:15:16,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:15:16,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:15:16,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:15:16,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:15:16,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:15:16,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:15:16,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:15:16,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:15:16,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:15:16,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:15:16,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:15:16,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:15:16,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:15:16,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:15:16,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:15:16,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:15:16,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:15:16,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:15:16,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:15:16,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:15:16,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:15:16,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:15:16,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:15:16,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:15:16,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:15:16,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:15:16,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:15:16,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:15:16,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:15:16,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:15:16,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:15:16,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:15:16,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:15:16,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:15:16,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:15:16,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 17:15:16,252 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:15:16,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:15:16,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:15:16,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:15:16,255 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:15:16,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:15:16,255 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:15:16,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:15:16,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:15:16,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:15:16,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:15:16,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:15:16,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:15:16,257 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:15:16,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:15:16,257 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:15:16,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:15:16,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:15:16,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:15:16,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:15:16,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:15:16,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:15:16,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:15:16,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:15:16,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:15:16,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:15:16,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:15:16,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:15:16,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:15:16,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:15:16,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:15:16,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:15:16,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:15:16,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:15:16,705 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:15:16,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd02.c [2020-10-28 17:15:16,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6be43380e/991fdd0900cd406dba76b07dc8cf9731/FLAG14a0305bc [2020-10-28 17:15:17,452 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:15:17,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/gcd02.c [2020-10-28 17:15:17,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6be43380e/991fdd0900cd406dba76b07dc8cf9731/FLAG14a0305bc [2020-10-28 17:15:17,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6be43380e/991fdd0900cd406dba76b07dc8cf9731 [2020-10-28 17:15:17,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:15:17,789 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:15:17,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:15:17,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:15:17,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:15:17,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:15:17" (1/1) ... [2020-10-28 17:15:17,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa4103a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:17, skipping insertion in model container [2020-10-28 17:15:17,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:15:17" (1/1) ... [2020-10-28 17:15:17,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:15:17,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:15:18,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:15:18,053 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:15:18,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:15:18,119 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:15:18,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:18 WrapperNode [2020-10-28 17:15:18,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:15:18,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:15:18,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:15:18,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:15:18,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:18" (1/1) ... [2020-10-28 17:15:18,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:18" (1/1) ... [2020-10-28 17:15:18,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:18" (1/1) ... [2020-10-28 17:15:18,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:18" (1/1) ... [2020-10-28 17:15:18,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:18" (1/1) ... [2020-10-28 17:15:18,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:18" (1/1) ... [2020-10-28 17:15:18,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:18" (1/1) ... [2020-10-28 17:15:18,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:15:18,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:15:18,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:15:18,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:15:18,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:15:18,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:15:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:15:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:15:18,301 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-10-28 17:15:18,301 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2020-10-28 17:15:18,301 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:15:18,302 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:15:18,303 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:15:18,303 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:15:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:15:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:15:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-10-28 17:15:18,306 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2020-10-28 17:15:18,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:15:18,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:15:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:15:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:15:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:15:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:15:18,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:15:18,965 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:15:18,965 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 17:15:18,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:15:18 BoogieIcfgContainer [2020-10-28 17:15:18,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:15:18,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:15:18,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:15:18,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:15:18,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:15:17" (1/3) ... [2020-10-28 17:15:18,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2284b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:15:18, skipping insertion in model container [2020-10-28 17:15:18,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:15:18" (2/3) ... [2020-10-28 17:15:18,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2284b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:15:18, skipping insertion in model container [2020-10-28 17:15:18,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:15:18" (3/3) ... [2020-10-28 17:15:19,003 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd02.c [2020-10-28 17:15:19,017 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:15:19,024 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:15:19,042 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:15:19,087 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:15:19,087 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:15:19,087 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:15:19,087 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:15:19,088 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:15:19,088 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:15:19,088 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:15:19,088 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:15:19,116 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-28 17:15:19,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-28 17:15:19,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:19,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:19,125 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:19,131 INFO L82 PathProgramCache]: Analyzing trace with hash -563936020, now seen corresponding path program 1 times [2020-10-28 17:15:19,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:19,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811266976] [2020-10-28 17:15:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:19,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:19,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:19,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:19,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:15:19,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:15:19,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-28 17:15:19,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:19,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:15:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:15:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:19,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:15:20,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:20,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:20,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:20,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:20,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:20,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:15:20,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:20,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:20,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:20,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:20,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 18 [2020-10-28 17:15:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:15:20,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811266976] [2020-10-28 17:15:20,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:15:20,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 17:15:20,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305162050] [2020-10-28 17:15:20,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:15:20,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:20,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:15:20,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:15:20,199 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 7 states. [2020-10-28 17:15:20,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:20,806 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2020-10-28 17:15:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:15:20,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-28 17:15:20,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:20,818 INFO L225 Difference]: With dead ends: 86 [2020-10-28 17:15:20,819 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 17:15:20,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:15:20,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 17:15:20,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-28 17:15:20,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 17:15:20,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2020-10-28 17:15:20,883 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 14 [2020-10-28 17:15:20,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:20,884 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2020-10-28 17:15:20,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:15:20,884 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2020-10-28 17:15:20,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 17:15:20,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:20,886 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:20,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:15:20,886 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:20,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:20,887 INFO L82 PathProgramCache]: Analyzing trace with hash -604465206, now seen corresponding path program 1 times [2020-10-28 17:15:20,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:20,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948271210] [2020-10-28 17:15:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:20,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:21,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:21,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:21,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 17:15:21,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:15:21,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-28 17:15:21,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:21,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:15:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:15:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:15:21,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:21,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:21,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:21,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:21,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:21,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:21,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:15:21,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:21,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:21,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:21,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:15:21,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948271210] [2020-10-28 17:15:21,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:15:21,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:15:21,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496623743] [2020-10-28 17:15:21,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:15:21,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:21,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:15:21,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:15:21,297 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 9 states. [2020-10-28 17:15:22,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:22,133 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2020-10-28 17:15:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:15:22,134 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-28 17:15:22,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:22,139 INFO L225 Difference]: With dead ends: 64 [2020-10-28 17:15:22,140 INFO L226 Difference]: Without dead ends: 61 [2020-10-28 17:15:22,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:15:22,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-28 17:15:22,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-10-28 17:15:22,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 17:15:22,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2020-10-28 17:15:22,181 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 19 [2020-10-28 17:15:22,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:22,182 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2020-10-28 17:15:22,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:15:22,182 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2020-10-28 17:15:22,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 17:15:22,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:22,184 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:22,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:15:22,184 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:22,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:22,185 INFO L82 PathProgramCache]: Analyzing trace with hash -516730711, now seen corresponding path program 1 times [2020-10-28 17:15:22,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:22,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471218315] [2020-10-28 17:15:22,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:22,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:22,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:22,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:22,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:22,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 17:15:22,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:15:22,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-10-28 17:15:22,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:22,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:15:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:15:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:15:22,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:22,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:22,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:22,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:22,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:22,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:22,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:15:22,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:22,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:22,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:22,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:22,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:22,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:22,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:15:22,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471218315] [2020-10-28 17:15:22,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:15:22,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:15:22,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446439594] [2020-10-28 17:15:22,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:15:22,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:22,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:15:22,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:15:22,961 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand 10 states. [2020-10-28 17:15:23,370 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-10-28 17:15:24,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:24,182 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2020-10-28 17:15:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:15:24,190 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-10-28 17:15:24,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:24,192 INFO L225 Difference]: With dead ends: 69 [2020-10-28 17:15:24,192 INFO L226 Difference]: Without dead ends: 66 [2020-10-28 17:15:24,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:15:24,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-28 17:15:24,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-10-28 17:15:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-28 17:15:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2020-10-28 17:15:24,208 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 19 [2020-10-28 17:15:24,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:24,209 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2020-10-28 17:15:24,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:15:24,209 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2020-10-28 17:15:24,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 17:15:24,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:24,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:24,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:15:24,211 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:24,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:24,212 INFO L82 PathProgramCache]: Analyzing trace with hash -398892426, now seen corresponding path program 1 times [2020-10-28 17:15:24,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:24,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956693157] [2020-10-28 17:15:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:24,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:24,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:24,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:24,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:24,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:25,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:25,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 17:15:25,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:15:25,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-10-28 17:15:25,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:25,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:15:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:15:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:15:25,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:25,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:25,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:25,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:25,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:25,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:25,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:15:25,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:25,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:25,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:25,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:25,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:25,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:25,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:15:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:25,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:25,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:25,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:25,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:25,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:15:25,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:15:25,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:25,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:25,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:15:25,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:25,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:15:25,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:25,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:15:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:25,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:25,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:25,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:25,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:25,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:15:25,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:25,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:25,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:15:25,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:15:25,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:15:25,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:15:25,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956693157] [2020-10-28 17:15:25,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:15:25,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:15:25,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308435562] [2020-10-28 17:15:25,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:15:25,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:25,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:15:25,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:15:25,227 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand 6 states. [2020-10-28 17:15:25,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:25,493 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-10-28 17:15:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:15:25,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-28 17:15:25,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:25,495 INFO L225 Difference]: With dead ends: 61 [2020-10-28 17:15:25,495 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 17:15:25,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:15:25,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 17:15:25,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-28 17:15:25,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-28 17:15:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2020-10-28 17:15:25,508 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 25 [2020-10-28 17:15:25,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:25,508 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2020-10-28 17:15:25,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:15:25,509 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2020-10-28 17:15:25,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 17:15:25,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:25,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:25,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:15:25,511 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:25,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:25,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1624251770, now seen corresponding path program 1 times [2020-10-28 17:15:25,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:25,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535713126] [2020-10-28 17:15:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:25,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:25,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:25,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:15:25,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:25,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 17:15:25,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:25,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:25,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:15:25,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:15:25,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:15:25,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:25,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:25,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:25,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:25,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:25,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:25,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:15:25,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:25,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:25,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:25,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:15:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:25,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:25,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:25,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:25,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:25,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:15:25,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:25,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:25,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:15:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:25,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:25,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:15:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:25,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:25,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:25,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:25,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:25,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:15:25,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:25,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:15:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:15:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:15:25,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:15:25,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535713126] [2020-10-28 17:15:25,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:15:25,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:15:25,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743770290] [2020-10-28 17:15:25,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:15:25,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:25,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:15:25,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:15:25,780 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand 9 states. [2020-10-28 17:15:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:26,350 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2020-10-28 17:15:26,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:15:26,351 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-28 17:15:26,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:26,352 INFO L225 Difference]: With dead ends: 74 [2020-10-28 17:15:26,353 INFO L226 Difference]: Without dead ends: 69 [2020-10-28 17:15:26,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:15:26,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-28 17:15:26,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2020-10-28 17:15:26,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-28 17:15:26,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2020-10-28 17:15:26,387 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 26 [2020-10-28 17:15:26,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:26,387 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2020-10-28 17:15:26,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:15:26,387 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2020-10-28 17:15:26,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 17:15:26,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:26,390 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:26,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:15:26,390 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:26,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:26,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1980503842, now seen corresponding path program 1 times [2020-10-28 17:15:26,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:26,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353666799] [2020-10-28 17:15:26,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:26,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:26,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:26,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:15:26,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:26,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 17:15:26,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:26,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:15:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 17:15:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:26,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:26,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:26,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:26,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:26,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:26,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:26,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:15:26,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:26,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:26,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:26,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:26,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:26,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:26,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:15:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:26,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:26,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:26,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:26,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:26,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:15:26,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:26,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:26,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:26,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:26,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:26,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:26,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:15:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:26,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:26,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:26,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:15:26,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:26,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:15:26,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:26,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:26,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:15:26,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:26,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:15:26,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:26,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:26,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:26,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:26,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:15:26,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:26,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:26,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:15:26,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:26,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:15:26,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 17:15:26,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353666799] [2020-10-28 17:15:26,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:26,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:15:26,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450036507] [2020-10-28 17:15:26,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:15:26,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:26,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:15:26,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:15:26,675 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand 7 states. [2020-10-28 17:15:26,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:26,968 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2020-10-28 17:15:26,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:15:26,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-10-28 17:15:26,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:26,971 INFO L225 Difference]: With dead ends: 70 [2020-10-28 17:15:26,971 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 17:15:26,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:15:26,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 17:15:26,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-28 17:15:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-28 17:15:26,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2020-10-28 17:15:26,986 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 32 [2020-10-28 17:15:26,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:26,986 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2020-10-28 17:15:26,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:15:26,986 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2020-10-28 17:15:26,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 17:15:26,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:26,988 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:26,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:15:26,989 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:26,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:26,989 INFO L82 PathProgramCache]: Analyzing trace with hash 999161632, now seen corresponding path program 1 times [2020-10-28 17:15:26,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:26,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356546941] [2020-10-28 17:15:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:27,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:27,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:27,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 17:15:27,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:27,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 17:15:27,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:27,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:27,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:15:27,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:15:27,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 17:15:27,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:27,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:27,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:27,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:27,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:27,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:27,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:15:27,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:27,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:27,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:27,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:15:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:27,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:27,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:27,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:27,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:27,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:15:27,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:27,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:27,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:15:27,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:27,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:27,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:27,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:15:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:27,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:27,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:27,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:15:27,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:27,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 17:15:27,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:27,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:27,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:27,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:15:27,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:15:27,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:27,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:27,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:27,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:27,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:27,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:27,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:15:27,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:27,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:15:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:27,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:27,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 17:15:27,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356546941] [2020-10-28 17:15:27,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:27,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:15:27,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984765974] [2020-10-28 17:15:27,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:15:27,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:27,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:15:27,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:15:27,408 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand 11 states. [2020-10-28 17:15:27,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:27,971 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2020-10-28 17:15:27,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:15:27,973 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-28 17:15:27,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:27,974 INFO L225 Difference]: With dead ends: 69 [2020-10-28 17:15:27,974 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 17:15:27,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:15:27,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 17:15:28,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-28 17:15:28,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-28 17:15:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-28 17:15:28,002 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 33 [2020-10-28 17:15:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:28,003 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-28 17:15:28,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:15:28,003 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-28 17:15:28,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:15:28,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:28,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:28,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:15:28,008 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:28,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1831946258, now seen corresponding path program 1 times [2020-10-28 17:15:28,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:28,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509187102] [2020-10-28 17:15:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:28,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:28,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:28,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:28,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:28,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:28,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:29,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:29,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:15:29,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:15:29,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-10-28 17:15:29,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:29,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:29,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:15:29,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:15:29,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:15:29,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:29,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:29,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:29,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:29,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:29,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:29,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:15:29,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:29,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:29,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:29,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:29,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:29,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:29,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:15:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:29,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:29,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:29,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:29,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:29,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:15:29,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:15:29,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 17:15:29,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:29,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:29,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:15:29,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:29,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:15:29,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:29,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:15:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:29,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:29,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:29,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:29,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:29,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:15:29,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:29,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:29,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:29,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:29,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:29,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:29,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 17:15:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:29,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:29,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:29,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:29,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:29,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:15:29,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:29,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:29,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:15:29,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:15:29,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:15:29,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 17:15:29,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509187102] [2020-10-28 17:15:29,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:29,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:15:29,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497057692] [2020-10-28 17:15:29,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:15:29,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:29,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:15:29,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:15:29,403 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 14 states. [2020-10-28 17:15:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:30,420 INFO L93 Difference]: Finished difference Result 85 states and 109 transitions. [2020-10-28 17:15:30,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:15:30,421 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-28 17:15:30,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:30,423 INFO L225 Difference]: With dead ends: 85 [2020-10-28 17:15:30,423 INFO L226 Difference]: Without dead ends: 80 [2020-10-28 17:15:30,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2020-10-28 17:15:30,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-28 17:15:30,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2020-10-28 17:15:30,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 17:15:30,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2020-10-28 17:15:30,443 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 34 [2020-10-28 17:15:30,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:30,444 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2020-10-28 17:15:30,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:15:30,444 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2020-10-28 17:15:30,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:15:30,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:30,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:30,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:15:30,446 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:30,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:30,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1148189006, now seen corresponding path program 1 times [2020-10-28 17:15:30,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:30,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330241935] [2020-10-28 17:15:30,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:30,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:30,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:30,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:15:30,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:30,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 17:15:30,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:30,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:15:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:15:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:15:30,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:30,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:30,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:30,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:30,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:30,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:30,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:15:30,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:30,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:30,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:30,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:15:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:30,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:30,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:30,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:15:30,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:30,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 17:15:30,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:30,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:15:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:30,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:15:30,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:30,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:15:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:30,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:30,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:30,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:30,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:30,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:15:30,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:30,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:30,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:30,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:30,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:30,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:30,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 17:15:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:30,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:30,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:30,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:30,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:30,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:15:30,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:30,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:30,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:15:30,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:15:30,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:15:30,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 17:15:30,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330241935] [2020-10-28 17:15:30,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:30,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:15:30,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333897862] [2020-10-28 17:15:30,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:15:30,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:30,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:15:30,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:15:30,863 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand 11 states. [2020-10-28 17:15:31,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:31,467 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2020-10-28 17:15:31,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:15:31,468 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-28 17:15:31,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:31,469 INFO L225 Difference]: With dead ends: 84 [2020-10-28 17:15:31,469 INFO L226 Difference]: Without dead ends: 79 [2020-10-28 17:15:31,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:15:31,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-28 17:15:31,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2020-10-28 17:15:31,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-28 17:15:31,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2020-10-28 17:15:31,502 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 34 [2020-10-28 17:15:31,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:31,504 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2020-10-28 17:15:31,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:15:31,505 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2020-10-28 17:15:31,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 17:15:31,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:31,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:31,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:15:31,512 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:31,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:31,512 INFO L82 PathProgramCache]: Analyzing trace with hash -2142927852, now seen corresponding path program 1 times [2020-10-28 17:15:31,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:31,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738294417] [2020-10-28 17:15:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:31,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:31,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:31,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 17:15:31,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:31,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-28 17:15:31,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:31,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:15:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:15:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:15:31,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:31,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:31,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:31,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:31,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:31,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:31,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:15:31,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:31,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:31,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:31,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:31,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:31,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:15:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:31,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:31,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:31,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:15:31,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:31,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 17:15:31,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:31,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:31,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:15:31,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:31,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:15:31,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:32,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:15:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:32,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:32,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:32,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:32,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:32,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:15:32,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:32,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:32,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:32,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:32,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:32,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:32,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 17:15:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:32,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:32,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:32,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:15:32,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:32,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 17:15:32,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:32,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:15:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:15:32,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:32,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:32,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:32,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:32,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:32,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:32,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:15:32,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:32,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:32,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:15:32,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:32,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:32,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:32,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 17:15:32,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738294417] [2020-10-28 17:15:32,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:32,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:15:32,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146827212] [2020-10-28 17:15:32,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:15:32,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:32,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:15:32,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:15:32,232 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand 13 states. [2020-10-28 17:15:33,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:33,136 INFO L93 Difference]: Finished difference Result 90 states and 115 transitions. [2020-10-28 17:15:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:15:33,137 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-28 17:15:33,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:33,139 INFO L225 Difference]: With dead ends: 90 [2020-10-28 17:15:33,139 INFO L226 Difference]: Without dead ends: 85 [2020-10-28 17:15:33,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:15:33,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-28 17:15:33,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 74. [2020-10-28 17:15:33,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-28 17:15:33,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-10-28 17:15:33,154 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 41 [2020-10-28 17:15:33,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:33,155 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-10-28 17:15:33,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:15:33,155 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-10-28 17:15:33,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 17:15:33,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:33,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:33,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:15:33,157 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:33,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:33,158 INFO L82 PathProgramCache]: Analyzing trace with hash -131001996, now seen corresponding path program 1 times [2020-10-28 17:15:33,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:33,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233965647] [2020-10-28 17:15:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:33,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:33,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:33,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 17:15:33,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:33,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-28 17:15:33,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:33,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:15:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:15:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 17:15:33,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:33,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:33,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:33,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:33,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:33,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:33,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:15:33,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:33,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:33,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:33,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:33,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:33,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:33,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:15:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:33,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:33,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:33,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:15:33,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:33,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 17:15:33,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:33,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:15:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:15:33,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:33,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:15:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:33,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:33,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:33,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:33,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:33,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:15:33,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:33,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:33,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:33,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 17:15:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:33,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:33,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:33,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:15:33,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:33,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 17:15:33,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:33,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:15:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:15:33,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:33,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:33,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:33,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:33,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:33,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:15:33,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:33,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:33,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:15:33,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:33,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:33,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 17:15:33,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233965647] [2020-10-28 17:15:33,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:33,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:15:33,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215183188] [2020-10-28 17:15:33,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:15:33,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:33,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:15:33,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:15:33,803 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 12 states. [2020-10-28 17:15:34,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:34,637 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-10-28 17:15:34,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:15:34,638 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-28 17:15:34,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:34,640 INFO L225 Difference]: With dead ends: 82 [2020-10-28 17:15:34,641 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 17:15:34,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:15:34,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 17:15:34,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2020-10-28 17:15:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 17:15:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2020-10-28 17:15:34,664 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 41 [2020-10-28 17:15:34,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:34,664 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2020-10-28 17:15:34,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:15:34,665 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2020-10-28 17:15:34,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 17:15:34,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:34,669 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:34,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:15:34,669 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:34,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:34,673 INFO L82 PathProgramCache]: Analyzing trace with hash 646374662, now seen corresponding path program 2 times [2020-10-28 17:15:34,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:34,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747363091] [2020-10-28 17:15:34,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:34,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:35,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:35,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:35,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:36,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:36,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 17:15:36,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 17:15:36,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1778 [2020-10-28 17:15:36,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:36,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 17:15:36,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:15:36,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:15:36,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:36,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:36,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:36,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:36,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:36,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:36,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:15:36,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:36,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:36,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:36,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:36,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:36,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:36,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:15:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:36,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:36,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:36,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:36,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:36,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:36,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:37,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:37,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:15:37,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:15:37,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-28 17:15:37,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:37,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:15:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:15:37,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:37,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:15:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:37,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:37,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:37,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:15:37,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:37,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 17:15:37,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:37,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:15:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:15:37,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:37,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:15:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:37,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:37,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:37,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:37,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:37,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:15:37,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:37,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:37,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:37,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:15:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:37,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:37,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:37,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:37,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:37,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:15:37,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:37,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:15:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:15:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:15:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:37,397 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 17:15:37,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747363091] [2020-10-28 17:15:37,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:37,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:15:37,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963502280] [2020-10-28 17:15:37,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:15:37,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:37,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:15:37,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:15:37,399 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand 16 states. [2020-10-28 17:15:38,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:38,753 INFO L93 Difference]: Finished difference Result 96 states and 123 transitions. [2020-10-28 17:15:38,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:15:38,754 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-10-28 17:15:38,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:38,755 INFO L225 Difference]: With dead ends: 96 [2020-10-28 17:15:38,755 INFO L226 Difference]: Without dead ends: 91 [2020-10-28 17:15:38,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2020-10-28 17:15:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-28 17:15:38,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 77. [2020-10-28 17:15:38,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-28 17:15:38,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2020-10-28 17:15:38,769 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 42 [2020-10-28 17:15:38,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:38,770 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2020-10-28 17:15:38,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:15:38,770 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2020-10-28 17:15:38,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 17:15:38,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:38,771 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:38,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:15:38,772 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:38,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:38,775 INFO L82 PathProgramCache]: Analyzing trace with hash 705700454, now seen corresponding path program 1 times [2020-10-28 17:15:38,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:38,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575204431] [2020-10-28 17:15:38,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:38,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:38,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:38,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:38,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:38,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:38,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:39,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:39,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:40,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:40,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 17:15:40,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 17:15:40,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2109 [2020-10-28 17:15:40,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:40,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:40,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 17:15:40,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:15:40,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:15:40,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:40,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:40,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:40,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:40,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:40,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:40,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:15:40,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:40,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:40,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:40,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:40,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:40,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:40,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:15:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:40,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:41,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:41,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:41,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:41,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:41,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:41,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:41,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:41,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:15:41,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:15:41,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 872 [2020-10-28 17:15:41,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:41,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:15:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:41,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:15:41,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:41,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:15:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:41,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:41,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:41,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:15:41,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:41,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 17:15:41,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:41,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:41,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:15:41,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:41,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:15:41,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 17:15:42,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:15:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:42,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:42,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:42,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:42,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:42,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:15:42,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:42,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:42,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:42,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:42,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:42,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:42,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:15:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:42,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:42,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:42,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:42,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:15:42,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:42,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:42,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:15:42,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:15:42,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:15:42,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 17:15:42,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575204431] [2020-10-28 17:15:42,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:42,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:15:42,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099948896] [2020-10-28 17:15:42,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:15:42,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:42,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:15:42,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:15:42,139 INFO L87 Difference]: Start difference. First operand 77 states and 97 transitions. Second operand 17 states. [2020-10-28 17:15:43,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:43,347 INFO L93 Difference]: Finished difference Result 110 states and 144 transitions. [2020-10-28 17:15:43,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:15:43,348 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2020-10-28 17:15:43,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:43,352 INFO L225 Difference]: With dead ends: 110 [2020-10-28 17:15:43,352 INFO L226 Difference]: Without dead ends: 105 [2020-10-28 17:15:43,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2020-10-28 17:15:43,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-28 17:15:43,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 82. [2020-10-28 17:15:43,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 17:15:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2020-10-28 17:15:43,378 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 42 [2020-10-28 17:15:43,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:43,379 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2020-10-28 17:15:43,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:15:43,379 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2020-10-28 17:15:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 17:15:43,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:43,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:43,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:15:43,381 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:43,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:43,382 INFO L82 PathProgramCache]: Analyzing trace with hash -580332890, now seen corresponding path program 2 times [2020-10-28 17:15:43,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:43,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102765813] [2020-10-28 17:15:43,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:43,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:43,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:43,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:43,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:43,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:43,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:43,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:43,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:45,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 17:15:45,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 17:15:45,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1673 [2020-10-28 17:15:45,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:45,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:45,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 17:15:45,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:15:45,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:15:45,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:45,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:45,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:45,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:45,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:45,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:15:45,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:45,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:45,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:45,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:45,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:45,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:15:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:45,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:45,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:15:45,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:15:45,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-28 17:15:45,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:45,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:15:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:15:45,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:45,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:15:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:45,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:45,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:15:45,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:15:45,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 17:15:45,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:45,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:15:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:15:45,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:45,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:15:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:45,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:45,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:45,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:45,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:15:45,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:45,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:45,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:15:45,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:45,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:45,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:45,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:15:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:45,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:45,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:45,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:45,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:45,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:15:45,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:45,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:45,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:15:45,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:15:45,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:15:45,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 17:15:45,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102765813] [2020-10-28 17:15:45,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:45,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:15:45,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826640909] [2020-10-28 17:15:45,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:15:45,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:45,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:15:45,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:15:45,828 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand 17 states. [2020-10-28 17:15:47,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:47,386 INFO L93 Difference]: Finished difference Result 115 states and 152 transitions. [2020-10-28 17:15:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:15:47,386 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2020-10-28 17:15:47,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:47,388 INFO L225 Difference]: With dead ends: 115 [2020-10-28 17:15:47,388 INFO L226 Difference]: Without dead ends: 110 [2020-10-28 17:15:47,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2020-10-28 17:15:47,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-28 17:15:47,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2020-10-28 17:15:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 17:15:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 112 transitions. [2020-10-28 17:15:47,411 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 112 transitions. Word has length 42 [2020-10-28 17:15:47,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:47,411 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 112 transitions. [2020-10-28 17:15:47,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:15:47,412 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 112 transitions. [2020-10-28 17:15:47,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 17:15:47,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:47,414 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:47,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:15:47,414 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:47,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:47,415 INFO L82 PathProgramCache]: Analyzing trace with hash -951636832, now seen corresponding path program 2 times [2020-10-28 17:15:47,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:47,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934937021] [2020-10-28 17:15:47,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:47,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:47,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:47,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:47,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:47,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:47,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:47,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:47,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:47,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:49,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:49,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 17:15:49,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 17:15:49,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1859 [2020-10-28 17:15:49,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:49,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 17:15:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:15:49,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 17:15:49,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:49,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:49,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:49,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:49,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:49,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:49,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:15:49,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:49,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:49,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:49,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:15:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:49,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:49,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:49,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:49,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:49,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:49,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:49,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:15:49,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:15:49,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-28 17:15:49,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:49,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:49,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:15:49,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:49,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:15:49,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:15:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:49,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:49,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:49,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:50,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:50,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:15:50,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:15:50,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 17:15:50,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:50,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:50,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:15:50,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:50,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:15:50,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:50,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:15:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:50,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:50,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:50,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:50,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:50,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:15:50,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:50,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:15:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:50,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:50,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:15:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:50,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:50,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:50,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:15:50,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:50,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 17:15:50,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:50,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:15:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:15:50,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:50,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:50,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:50,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:50,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:50,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:50,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:15:50,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:50,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:50,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:15:50,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:50,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:50,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:50,387 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 17:15:50,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934937021] [2020-10-28 17:15:50,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:50,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 17:15:50,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432512033] [2020-10-28 17:15:50,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 17:15:50,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:50,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 17:15:50,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:15:50,390 INFO L87 Difference]: Start difference. First operand 87 states and 112 transitions. Second operand 19 states. [2020-10-28 17:15:51,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:51,807 INFO L93 Difference]: Finished difference Result 108 states and 140 transitions. [2020-10-28 17:15:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:15:51,807 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2020-10-28 17:15:51,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:51,808 INFO L225 Difference]: With dead ends: 108 [2020-10-28 17:15:51,809 INFO L226 Difference]: Without dead ends: 103 [2020-10-28 17:15:51,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2020-10-28 17:15:51,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-28 17:15:51,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 85. [2020-10-28 17:15:51,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 17:15:51,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 108 transitions. [2020-10-28 17:15:51,827 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 108 transitions. Word has length 49 [2020-10-28 17:15:51,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:51,829 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 108 transitions. [2020-10-28 17:15:51,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 17:15:51,829 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 108 transitions. [2020-10-28 17:15:51,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 17:15:51,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:51,834 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:51,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:15:51,834 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:51,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:51,835 INFO L82 PathProgramCache]: Analyzing trace with hash 62923584, now seen corresponding path program 1 times [2020-10-28 17:15:51,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:51,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95140593] [2020-10-28 17:15:51,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:51,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:51,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:52,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:52,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:52,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:52,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:52,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:52,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:53,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:53,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 17:15:53,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 17:15:53,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1510 [2020-10-28 17:15:53,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:53,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 17:15:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:15:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 17:15:53,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:53,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:53,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:53,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:53,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:53,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:53,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:15:53,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:53,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:53,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:53,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:53,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:53,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:53,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:15:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:53,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:53,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:53,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:53,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:53,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:53,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:53,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:53,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:53,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:15:53,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:15:53,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-28 17:15:53,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:53,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:53,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:15:53,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:15:53,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:53,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:15:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:54,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:54,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:54,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:54,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:15:54,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:15:54,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 17:15:54,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:54,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:15:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:15:54,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:54,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:15:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:54,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:54,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:54,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:54,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:54,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:15:54,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:54,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:15:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:54,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:54,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:15:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:54,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:54,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:54,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:15:54,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:54,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:15:54,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:54,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:54,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:54,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:15:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:15:54,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:54,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:54,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:54,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:54,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:54,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:54,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:15:54,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:54,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:15:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:54,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 17:15:54,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95140593] [2020-10-28 17:15:54,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:54,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 17:15:54,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63747353] [2020-10-28 17:15:54,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 17:15:54,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:54,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 17:15:54,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:15:54,400 INFO L87 Difference]: Start difference. First operand 85 states and 108 transitions. Second operand 19 states. [2020-10-28 17:15:55,387 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-28 17:15:55,535 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-28 17:15:55,686 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-28 17:15:55,846 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-28 17:15:56,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:56,268 INFO L93 Difference]: Finished difference Result 119 states and 156 transitions. [2020-10-28 17:15:56,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:15:56,268 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2020-10-28 17:15:56,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:56,270 INFO L225 Difference]: With dead ends: 119 [2020-10-28 17:15:56,270 INFO L226 Difference]: Without dead ends: 114 [2020-10-28 17:15:56,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 17:15:56,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-28 17:15:56,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 87. [2020-10-28 17:15:56,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 17:15:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2020-10-28 17:15:56,295 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 111 transitions. Word has length 49 [2020-10-28 17:15:56,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:56,296 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 111 transitions. [2020-10-28 17:15:56,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 17:15:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 111 transitions. [2020-10-28 17:15:56,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 17:15:56,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:56,297 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:56,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:15:56,297 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:56,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:56,298 INFO L82 PathProgramCache]: Analyzing trace with hash 308439492, now seen corresponding path program 3 times [2020-10-28 17:15:56,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:56,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328468559] [2020-10-28 17:15:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:56,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:56,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:56,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 17:15:56,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:56,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-28 17:15:56,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:56,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:15:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:15:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 17:15:56,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:56,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:56,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:56,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:56,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:56,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:56,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:15:56,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:56,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:56,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:56,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:15:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:56,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:56,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:56,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:15:56,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:56,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 17:15:56,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:56,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:15:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:15:56,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:56,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:15:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:56,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:56,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:56,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:56,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:56,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:15:56,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:56,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:56,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:56,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:56,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:56,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:15:56,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 17:15:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:56,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:56,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:56,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:15:56,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:56,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 17:15:56,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:56,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:15:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:15:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:15:56,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:56,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:56,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:56,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:56,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:15:56,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:56,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 17:15:56,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:56,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:56,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:15:56,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:56,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:15:56,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:56,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:56,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:56,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:56,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:56,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:15:56,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:56,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:15:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:56,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 17:15:57,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328468559] [2020-10-28 17:15:57,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:57,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:15:57,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130310806] [2020-10-28 17:15:57,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:15:57,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:57,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:15:57,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:15:57,034 INFO L87 Difference]: Start difference. First operand 87 states and 111 transitions. Second operand 16 states. [2020-10-28 17:15:57,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:57,967 INFO L93 Difference]: Finished difference Result 107 states and 138 transitions. [2020-10-28 17:15:57,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:15:57,968 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-28 17:15:57,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:57,970 INFO L225 Difference]: With dead ends: 107 [2020-10-28 17:15:57,970 INFO L226 Difference]: Without dead ends: 97 [2020-10-28 17:15:57,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2020-10-28 17:15:57,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-28 17:15:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2020-10-28 17:15:57,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 17:15:57,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 114 transitions. [2020-10-28 17:15:57,984 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 114 transitions. Word has length 48 [2020-10-28 17:15:57,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:57,984 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 114 transitions. [2020-10-28 17:15:57,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:15:57,984 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 114 transitions. [2020-10-28 17:15:57,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 17:15:57,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:57,986 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:57,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 17:15:57,986 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:57,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:57,986 INFO L82 PathProgramCache]: Analyzing trace with hash -346188590, now seen corresponding path program 3 times [2020-10-28 17:15:57,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:57,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807575471] [2020-10-28 17:15:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:58,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:58,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:58,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:58,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:58,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:58,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:58,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:58,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:58,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:58,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:01,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:01,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 17:16:01,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 17:16:01,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3265 [2020-10-28 17:16:01,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:01,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 17:16:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:16:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:16:01,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:01,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:16:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:01,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:01,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:01,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:16:01,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:01,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:16:01,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:01,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:01,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:16:01,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:01,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:16:01,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:01,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:16:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:01,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:01,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:01,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:01,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:01,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:01,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:01,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:01,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:01,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:01,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:01,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:03,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:04,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:04,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:16:04,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 17:16:04,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2992 [2020-10-28 17:16:04,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:04,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:04,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 17:16:04,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:04,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:16:04,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:04,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:04,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:04,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:04,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:04,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:04,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:04,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:04,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:04,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:16:04,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:16:04,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-28 17:16:04,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:04,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:04,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:16:04,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:04,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:16:04,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:05,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:05,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:05,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:05,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:16:05,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:05,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 17:16:05,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:05,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:05,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:16:05,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:05,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:16:05,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:05,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:05,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:05,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:05,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:05,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:05,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:16:05,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:05,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:05,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:16:05,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:05,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:16:05,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:05,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:16:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:05,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:05,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:05,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:05,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:05,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:16:05,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:05,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:05,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:16:05,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:16:05,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:16:05,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 17:16:05,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807575471] [2020-10-28 17:16:05,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:16:05,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 17:16:05,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118730253] [2020-10-28 17:16:05,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 17:16:05,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:16:05,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 17:16:05,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:16:05,338 INFO L87 Difference]: Start difference. First operand 89 states and 114 transitions. Second operand 19 states. [2020-10-28 17:16:07,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:16:07,109 INFO L93 Difference]: Finished difference Result 123 states and 159 transitions. [2020-10-28 17:16:07,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:16:07,115 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-10-28 17:16:07,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:16:07,116 INFO L225 Difference]: With dead ends: 123 [2020-10-28 17:16:07,117 INFO L226 Difference]: Without dead ends: 118 [2020-10-28 17:16:07,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2020-10-28 17:16:07,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-28 17:16:07,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 99. [2020-10-28 17:16:07,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 17:16:07,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2020-10-28 17:16:07,130 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 50 [2020-10-28 17:16:07,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:16:07,130 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2020-10-28 17:16:07,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 17:16:07,131 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2020-10-28 17:16:07,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 17:16:07,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:16:07,132 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:16:07,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 17:16:07,132 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:16:07,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:16:07,133 INFO L82 PathProgramCache]: Analyzing trace with hash 744349682, now seen corresponding path program 4 times [2020-10-28 17:16:07,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:16:07,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331825180] [2020-10-28 17:16:07,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:16:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:07,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:07,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:07,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:07,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:07,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:07,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:07,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:07,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:07,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:07,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:10,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:10,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 17:16:10,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 17:16:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2980 [2020-10-28 17:16:10,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:10,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:10,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 17:16:10,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:16:10,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:16:10,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:10,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:16:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:10,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:10,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:10,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:16:10,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:16:10,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:10,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:16:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:16:10,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:10,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:16:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:10,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:10,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:10,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:10,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:10,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:10,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:10,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:10,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:11,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:12,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:12,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:16:12,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 17:16:12,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1838 [2020-10-28 17:16:12,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:12,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 17:16:12,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:12,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:16:12,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:12,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:12,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:12,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:12,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:12,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:12,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:12,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:16:12,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:16:12,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-28 17:16:12,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:12,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:16:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:16:12,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:12,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:12,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:12,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:12,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:12,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:12,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:16:12,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:16:12,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 17:16:12,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:12,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:16:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:16:12,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:12,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:12,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:12,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:12,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:12,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:12,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:16:12,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:12,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:16:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:16:12,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:12,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:16:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:12,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:12,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:12,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:12,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:12,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:16:12,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:12,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:12,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:16:12,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:16:12,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:16:12,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 17:16:12,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331825180] [2020-10-28 17:16:12,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:16:12,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 17:16:12,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025513454] [2020-10-28 17:16:12,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 17:16:12,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:16:12,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 17:16:12,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:16:12,845 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand 20 states. [2020-10-28 17:16:14,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:16:14,376 INFO L93 Difference]: Finished difference Result 149 states and 207 transitions. [2020-10-28 17:16:14,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:16:14,377 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2020-10-28 17:16:14,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:16:14,379 INFO L225 Difference]: With dead ends: 149 [2020-10-28 17:16:14,380 INFO L226 Difference]: Without dead ends: 144 [2020-10-28 17:16:14,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 17:16:14,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-28 17:16:14,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 106. [2020-10-28 17:16:14,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-28 17:16:14,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 140 transitions. [2020-10-28 17:16:14,397 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 140 transitions. Word has length 50 [2020-10-28 17:16:14,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:16:14,398 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 140 transitions. [2020-10-28 17:16:14,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 17:16:14,398 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 140 transitions. [2020-10-28 17:16:14,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 17:16:14,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:16:14,400 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1] [2020-10-28 17:16:14,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 17:16:14,400 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:16:14,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:16:14,401 INFO L82 PathProgramCache]: Analyzing trace with hash 486647526, now seen corresponding path program 5 times [2020-10-28 17:16:14,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:16:14,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558202323] [2020-10-28 17:16:14,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:16:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:14,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:14,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:14,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:14,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:14,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:14,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:14,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:14,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:14,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:14,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:14,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:14,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:16,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:16,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 17:16:16,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 17:16:16,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1632 [2020-10-28 17:16:16,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:16,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 17:16:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:16:16,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 17:16:16,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:16,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:16:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:16,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:16,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:16,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:16:16,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:16,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:16:16,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:16,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:16,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:16:16,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:16,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:16:16,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:16,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:16:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:16,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:16,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:16,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:16,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:16,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:16,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:16,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:16,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:16,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:16,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:16,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:16,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:16:16,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 17:16:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-28 17:16:16,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:16,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 17:16:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:16:16,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:17,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:17,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:17,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:16:17,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:17,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 17:16:17,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:17,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 17:16:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:16:17,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:17,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:17,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:17,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:17,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:16:17,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:17,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 17:16:17,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:17,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:17,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:16:17,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:17,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:16:17,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:17,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:17,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:17,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:17,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:16:17,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:17,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 17:16:17,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:17,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:17,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:16:17,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:17,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:16:17,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:17,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:17,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:17,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:17,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:17,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:17,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:16:17,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:17,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:16:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:16:17,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:17,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:16:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:17,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:17,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:17,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:17,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:17,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:16:17,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:17,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:16:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:16:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:16:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-28 17:16:17,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558202323] [2020-10-28 17:16:17,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:16:17,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 17:16:17,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288503775] [2020-10-28 17:16:17,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 17:16:17,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:16:17,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 17:16:17,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:16:17,596 INFO L87 Difference]: Start difference. First operand 106 states and 140 transitions. Second operand 21 states. [2020-10-28 17:16:19,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:16:19,472 INFO L93 Difference]: Finished difference Result 146 states and 197 transitions. [2020-10-28 17:16:19,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:16:19,473 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-10-28 17:16:19,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:16:19,475 INFO L225 Difference]: With dead ends: 146 [2020-10-28 17:16:19,475 INFO L226 Difference]: Without dead ends: 141 [2020-10-28 17:16:19,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 17:16:19,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-28 17:16:19,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 112. [2020-10-28 17:16:19,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-28 17:16:19,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 150 transitions. [2020-10-28 17:16:19,490 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 150 transitions. Word has length 58 [2020-10-28 17:16:19,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:16:19,491 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 150 transitions. [2020-10-28 17:16:19,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 17:16:19,491 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 150 transitions. [2020-10-28 17:16:19,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 17:16:19,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:16:19,492 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:16:19,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 17:16:19,492 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:16:19,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:16:19,493 INFO L82 PathProgramCache]: Analyzing trace with hash 613198592, now seen corresponding path program 2 times [2020-10-28 17:16:19,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:16:19,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881129383] [2020-10-28 17:16:19,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:16:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:19,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:19,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:19,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 17:16:19,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:19,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 17:16:19,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:19,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 17:16:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:16:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 17:16:19,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:19,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:16:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:19,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:19,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:19,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:16:19,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:19,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:16:19,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:19,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:19,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:16:19,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:19,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:16:19,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:19,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:16:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:19,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:19,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:19,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:16:19,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:19,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 17:16:19,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:19,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:16:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:16:19,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:19,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:19,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:19,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:19,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:16:19,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:19,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 17:16:19,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:19,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:19,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:16:19,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:19,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:16:19,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:19,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:19,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:19,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:19,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:19,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:19,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:16:19,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:19,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:16:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:16:19,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:19,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:16:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:19,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:19,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:19,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:16:19,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:19,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:16:19,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:19,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:19,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:16:19,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:16:19,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:16:19,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:19,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:16:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:19,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:20,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:20,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:20,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:20,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:16:20,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:20,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:20,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:16:20,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:20,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:16:20,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 17:16:20,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881129383] [2020-10-28 17:16:20,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:16:20,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:16:20,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77192121] [2020-10-28 17:16:20,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:16:20,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:16:20,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:16:20,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:16:20,061 INFO L87 Difference]: Start difference. First operand 112 states and 150 transitions. Second operand 15 states. [2020-10-28 17:16:21,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:16:21,114 INFO L93 Difference]: Finished difference Result 134 states and 179 transitions. [2020-10-28 17:16:21,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:16:21,115 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2020-10-28 17:16:21,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:16:21,117 INFO L225 Difference]: With dead ends: 134 [2020-10-28 17:16:21,118 INFO L226 Difference]: Without dead ends: 129 [2020-10-28 17:16:21,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:16:21,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-28 17:16:21,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 116. [2020-10-28 17:16:21,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-28 17:16:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 156 transitions. [2020-10-28 17:16:21,132 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 156 transitions. Word has length 49 [2020-10-28 17:16:21,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:16:21,133 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 156 transitions. [2020-10-28 17:16:21,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:16:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 156 transitions. [2020-10-28 17:16:21,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 17:16:21,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:16:21,134 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:16:21,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 17:16:21,134 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:16:21,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:16:21,135 INFO L82 PathProgramCache]: Analyzing trace with hash 2049530356, now seen corresponding path program 3 times [2020-10-28 17:16:21,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:16:21,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064513901] [2020-10-28 17:16:21,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:16:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:21,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:21,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:21,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:21,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:21,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:21,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:21,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:21,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:21,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:21,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:21,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:23,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:23,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 17:16:23,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 17:16:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1944 [2020-10-28 17:16:23,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:23,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 17:16:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:16:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 17:16:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:23,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:16:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:23,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:23,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:23,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:16:23,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:23,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:16:23,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:23,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:16:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:16:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:23,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:16:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:23,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:23,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:23,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:23,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:23,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:23,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:23,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:23,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:23,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:24,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:24,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:16:24,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 17:16:24,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1115 [2020-10-28 17:16:24,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:24,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:24,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 17:16:24,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:24,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:16:24,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:24,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:24,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:24,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:24,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:24,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:24,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:24,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:24,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:16:24,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:16:24,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 17:16:24,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:24,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:24,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:16:24,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:24,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:16:24,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:24,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:24,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:24,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:24,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:24,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:16:24,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:16:24,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 17:16:24,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:24,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:16:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:16:24,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:24,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:24,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:24,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:24,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:24,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:24,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:16:24,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:24,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:16:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:16:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:24,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:16:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:24,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:24,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:24,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:16:24,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:24,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:16:24,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:24,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:24,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:16:24,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:16:24,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:16:24,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:24,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:16:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:24,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:24,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:24,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:24,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:24,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:16:24,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:24,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:24,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:16:24,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:24,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:16:24,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 17:16:24,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064513901] [2020-10-28 17:16:24,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:16:24,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 17:16:24,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333678694] [2020-10-28 17:16:24,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 17:16:24,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:16:24,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 17:16:24,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:16:24,958 INFO L87 Difference]: Start difference. First operand 116 states and 156 transitions. Second operand 20 states. [2020-10-28 17:16:26,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:16:26,969 INFO L93 Difference]: Finished difference Result 142 states and 190 transitions. [2020-10-28 17:16:26,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:16:26,972 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2020-10-28 17:16:26,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:16:26,974 INFO L225 Difference]: With dead ends: 142 [2020-10-28 17:16:26,974 INFO L226 Difference]: Without dead ends: 137 [2020-10-28 17:16:26,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 17:16:26,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-28 17:16:26,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 113. [2020-10-28 17:16:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-28 17:16:26,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 151 transitions. [2020-10-28 17:16:26,989 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 151 transitions. Word has length 57 [2020-10-28 17:16:26,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:16:26,989 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 151 transitions. [2020-10-28 17:16:26,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 17:16:26,989 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 151 transitions. [2020-10-28 17:16:26,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 17:16:26,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:16:26,991 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:16:26,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 17:16:26,991 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:16:26,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:16:26,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1160945836, now seen corresponding path program 4 times [2020-10-28 17:16:26,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:16:26,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379451818] [2020-10-28 17:16:26,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:16:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:27,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:27,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:27,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:27,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:27,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:27,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:27,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:27,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:27,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:27,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:28,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:28,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 17:16:28,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 17:16:28,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1284 [2020-10-28 17:16:28,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:28,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 17:16:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:16:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 17:16:28,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:28,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:16:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:28,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:28,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:28,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:16:28,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:28,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:16:28,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:28,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:28,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:16:28,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:28,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:16:28,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:28,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:16:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:28,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:28,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:28,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:28,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:28,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:28,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:28,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:28,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:28,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:28,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:29,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:29,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:16:29,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 17:16:29,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1339 [2020-10-28 17:16:29,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:29,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:29,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 17:16:29,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:29,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:16:29,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:29,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:29,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:29,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:29,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:29,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:29,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:30,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:30,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:16:30,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:16:30,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-28 17:16:30,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:30,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:30,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:16:30,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:30,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:16:30,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:30,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:30,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:30,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:30,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:16:30,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:30,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 17:16:30,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:30,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:30,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:16:30,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:30,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:16:30,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:30,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:30,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:30,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:30,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:30,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:30,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:16:30,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:30,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:30,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:16:30,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:30,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:16:30,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:30,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:16:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:30,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:30,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:30,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:16:30,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:30,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:16:30,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:30,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:30,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:16:30,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:16:30,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:16:30,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:30,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:16:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:30,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:30,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:30,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:30,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:30,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:16:30,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:30,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:30,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:16:30,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:30,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:16:30,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:30,402 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 17:16:30,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379451818] [2020-10-28 17:16:30,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:16:30,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 17:16:30,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765405389] [2020-10-28 17:16:30,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 17:16:30,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:16:30,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 17:16:30,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:16:30,404 INFO L87 Difference]: Start difference. First operand 113 states and 151 transitions. Second operand 20 states. [2020-10-28 17:16:32,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:16:32,033 INFO L93 Difference]: Finished difference Result 169 states and 234 transitions. [2020-10-28 17:16:32,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:16:32,035 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2020-10-28 17:16:32,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:16:32,036 INFO L225 Difference]: With dead ends: 169 [2020-10-28 17:16:32,036 INFO L226 Difference]: Without dead ends: 164 [2020-10-28 17:16:32,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 17:16:32,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-28 17:16:32,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 120. [2020-10-28 17:16:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-28 17:16:32,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 162 transitions. [2020-10-28 17:16:32,054 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 162 transitions. Word has length 57 [2020-10-28 17:16:32,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:16:32,054 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 162 transitions. [2020-10-28 17:16:32,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 17:16:32,054 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 162 transitions. [2020-10-28 17:16:32,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 17:16:32,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:16:32,056 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:16:32,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 17:16:32,056 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:16:32,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:16:32,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1310216244, now seen corresponding path program 5 times [2020-10-28 17:16:32,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:16:32,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695570983] [2020-10-28 17:16:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:16:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:32,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:32,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:32,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:32,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:32,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:32,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:32,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:32,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:32,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:32,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:32,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:35,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:35,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 17:16:35,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 17:16:35,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2984 [2020-10-28 17:16:35,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:35,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 17:16:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:16:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 17:16:35,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:35,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:16:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:35,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:35,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:35,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:16:35,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:35,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:16:35,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:35,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:16:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:16:35,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:35,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:16:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:35,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:35,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:35,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:35,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:35,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:35,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:35,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:35,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:36,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:36,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:36,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:16:36,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 17:16:36,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1438 [2020-10-28 17:16:36,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:36,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 17:16:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:16:36,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:36,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:36,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:36,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:36,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:36,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:36,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:36,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:36,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:36,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:16:36,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:16:36,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-28 17:16:36,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:36,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:16:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:16:36,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:36,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:36,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:36,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:36,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:37,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:37,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:16:37,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:16:37,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 17:16:37,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:37,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:37,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:16:37,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:37,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:16:37,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:37,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:37,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:37,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:37,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:37,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:37,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 17:16:37,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:37,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:37,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:16:37,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:37,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:16:37,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:37,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:16:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:37,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:37,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:37,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:16:37,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:37,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:16:37,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:37,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:16:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:16:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:16:37,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:37,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:16:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:37,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:37,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:37,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:37,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:37,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:16:37,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:37,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:16:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:37,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:16:37,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 17:16:37,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695570983] [2020-10-28 17:16:37,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:16:37,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 17:16:37,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016602940] [2020-10-28 17:16:37,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 17:16:37,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:16:37,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 17:16:37,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:16:37,365 INFO L87 Difference]: Start difference. First operand 120 states and 162 transitions. Second operand 21 states. [2020-10-28 17:16:39,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:16:39,072 INFO L93 Difference]: Finished difference Result 163 states and 221 transitions. [2020-10-28 17:16:39,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:16:39,074 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-28 17:16:39,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:16:39,076 INFO L225 Difference]: With dead ends: 163 [2020-10-28 17:16:39,076 INFO L226 Difference]: Without dead ends: 158 [2020-10-28 17:16:39,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=168, Invalid=1092, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 17:16:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-28 17:16:39,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 116. [2020-10-28 17:16:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-28 17:16:39,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 156 transitions. [2020-10-28 17:16:39,096 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 156 transitions. Word has length 57 [2020-10-28 17:16:39,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:16:39,096 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 156 transitions. [2020-10-28 17:16:39,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 17:16:39,097 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 156 transitions. [2020-10-28 17:16:39,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 17:16:39,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:16:39,098 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:16:39,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 17:16:39,098 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:16:39,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:16:39,099 INFO L82 PathProgramCache]: Analyzing trace with hash 946931910, now seen corresponding path program 6 times [2020-10-28 17:16:39,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:16:39,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242038285] [2020-10-28 17:16:39,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:16:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:39,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:39,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:39,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:39,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:39,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:39,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:39,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:39,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:39,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:39,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:39,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:40,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:40,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 17:16:40,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 17:16:40,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1461 [2020-10-28 17:16:40,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:40,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 17:16:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:16:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 17:16:40,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:40,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:16:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:40,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:40,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:40,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:16:40,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:40,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:16:40,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:40,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:16:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:16:40,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:40,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:16:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:40,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:40,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:40,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:40,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:40,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:40,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:40,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:41,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:41,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:41,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:41,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:41,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:16:41,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 17:16:41,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1326 [2020-10-28 17:16:41,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:41,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 17:16:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:16:41,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:42,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:42,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:42,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:42,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:42,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:42,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:42,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:42,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:42,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:42,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:42,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:42,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:16:42,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 17:16:42,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-28 17:16:42,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:42,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 17:16:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:16:42,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:42,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:42,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:42,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:42,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:42,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:42,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:43,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:43,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:16:43,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:16:43,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-28 17:16:43,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:43,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:16:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:16:43,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:43,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:43,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:43,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:43,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:16:43,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:43,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 17:16:43,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:43,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:16:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:16:43,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:43,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:43,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:43,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:43,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:43,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:43,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:16:43,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:43,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:43,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:16:43,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:43,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:16:43,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:43,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:16:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:43,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:43,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:43,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:43,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:43,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:16:43,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:43,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:16:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:16:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:16:43,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 39 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 17:16:43,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242038285] [2020-10-28 17:16:43,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:16:43,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 17:16:43,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283666153] [2020-10-28 17:16:43,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 17:16:43,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:16:43,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 17:16:43,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:16:43,545 INFO L87 Difference]: Start difference. First operand 116 states and 156 transitions. Second operand 23 states. [2020-10-28 17:16:45,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:16:45,830 INFO L93 Difference]: Finished difference Result 184 states and 261 transitions. [2020-10-28 17:16:45,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:16:45,831 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 58 [2020-10-28 17:16:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:16:45,832 INFO L225 Difference]: With dead ends: 184 [2020-10-28 17:16:45,832 INFO L226 Difference]: Without dead ends: 179 [2020-10-28 17:16:45,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=210, Invalid=1350, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 17:16:45,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-28 17:16:45,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 128. [2020-10-28 17:16:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-28 17:16:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 176 transitions. [2020-10-28 17:16:45,851 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 176 transitions. Word has length 58 [2020-10-28 17:16:45,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:16:45,852 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 176 transitions. [2020-10-28 17:16:45,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 17:16:45,852 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 176 transitions. [2020-10-28 17:16:45,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 17:16:45,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:16:45,853 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:16:45,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 17:16:45,854 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:16:45,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:16:45,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1679631226, now seen corresponding path program 7 times [2020-10-28 17:16:45,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:16:45,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788645228] [2020-10-28 17:16:45,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:16:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:45,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:46,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:46,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:46,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:46,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:46,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:46,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:46,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:46,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:46,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:46,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:46,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:47,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:47,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 17:16:47,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 17:16:47,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1543 [2020-10-28 17:16:47,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:47,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:47,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 17:16:47,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:16:47,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 17:16:47,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:47,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:16:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:47,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:47,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:47,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:16:47,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:47,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:16:47,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:47,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:16:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:16:47,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:47,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:16:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:47,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:47,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:47,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:47,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:47,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:47,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:47,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:47,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:47,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:47,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:48,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:48,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:16:48,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 17:16:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-10-28 17:16:48,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:48,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 17:16:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:16:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:48,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:48,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:48,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:48,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:48,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:48,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:48,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:48,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:48,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:48,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:49,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:49,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:16:49,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 17:16:49,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1320 [2020-10-28 17:16:49,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:49,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:49,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 17:16:49,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:49,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:16:49,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:49,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:49,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:49,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:49,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:49,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:49,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:49,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:50,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:50,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:16:50,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:16:50,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-28 17:16:50,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:50,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:16:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:16:50,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:50,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:50,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:50,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:50,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:50,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:50,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:16:50,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:16:50,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 17:16:50,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:50,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:16:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:16:50,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:50,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:50,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:50,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:50,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:50,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:50,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:16:50,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:50,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:50,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:16:50,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:50,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:16:50,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:50,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:16:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:50,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:50,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:50,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:50,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:50,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:16:50,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:50,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:16:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:16:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:16:50,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:16:50,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788645228] [2020-10-28 17:16:50,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:16:50,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 17:16:50,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283647167] [2020-10-28 17:16:50,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 17:16:50,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:16:50,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 17:16:50,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:16:50,583 INFO L87 Difference]: Start difference. First operand 128 states and 176 transitions. Second operand 22 states. [2020-10-28 17:16:52,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:16:52,420 INFO L93 Difference]: Finished difference Result 174 states and 238 transitions. [2020-10-28 17:16:52,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:16:52,421 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 58 [2020-10-28 17:16:52,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:16:52,424 INFO L225 Difference]: With dead ends: 174 [2020-10-28 17:16:52,424 INFO L226 Difference]: Without dead ends: 169 [2020-10-28 17:16:52,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 17:16:52,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-28 17:16:52,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 139. [2020-10-28 17:16:52,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-28 17:16:52,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 193 transitions. [2020-10-28 17:16:52,442 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 193 transitions. Word has length 58 [2020-10-28 17:16:52,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:16:52,443 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 193 transitions. [2020-10-28 17:16:52,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 17:16:52,443 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 193 transitions. [2020-10-28 17:16:52,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 17:16:52,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:16:52,444 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1] [2020-10-28 17:16:52,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 17:16:52,445 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:16:52,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:16:52,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1672396326, now seen corresponding path program 8 times [2020-10-28 17:16:52,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:16:52,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854313873] [2020-10-28 17:16:52,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:16:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:52,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:52,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:52,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:52,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:52,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:52,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:52,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:52,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:52,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:52,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:52,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:54,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 17:16:54,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 17:16:54,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1845 [2020-10-28 17:16:54,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:54,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 17:16:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:16:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 17:16:54,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:54,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:16:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:54,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:54,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:16:54,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:54,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:16:54,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:54,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:16:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:16:54,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:54,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:16:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:54,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:54,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:56,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:56,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:16:56,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 17:16:56,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2190 [2020-10-28 17:16:56,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:56,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 17:16:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:16:56,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:56,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:56,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:56,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:56,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:56,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:56,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:56,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:56,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:56,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:56,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:56,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:57,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:57,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:16:57,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 17:16:57,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1125 [2020-10-28 17:16:57,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:57,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 17:16:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:16:57,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:57,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:57,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:57,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:57,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:16:57,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:57,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 17:16:57,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:57,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:57,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:16:57,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:57,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:16:57,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:57,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:57,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:57,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:57,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:16:57,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:57,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 17:16:57,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:57,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:16:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:16:57,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:58,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:16:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:58,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:58,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:58,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:58,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:58,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 17:16:58,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:58,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:58,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:16:58,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:16:58,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:16:58,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:58,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:16:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:58,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:16:58,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:16:58,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:16:58,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:16:58,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:16:58,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:16:58,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:16:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:16:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:16:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:16:58,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:16:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 17:16:58,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854313873] [2020-10-28 17:16:58,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:16:58,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 17:16:58,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788937503] [2020-10-28 17:16:58,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 17:16:58,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:16:58,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 17:16:58,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:16:58,217 INFO L87 Difference]: Start difference. First operand 139 states and 193 transitions. Second operand 19 states. [2020-10-28 17:16:59,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:16:59,878 INFO L93 Difference]: Finished difference Result 174 states and 239 transitions. [2020-10-28 17:16:59,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:16:59,879 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-10-28 17:16:59,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:16:59,881 INFO L225 Difference]: With dead ends: 174 [2020-10-28 17:16:59,881 INFO L226 Difference]: Without dead ends: 169 [2020-10-28 17:16:59,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 17:16:59,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-28 17:16:59,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 142. [2020-10-28 17:16:59,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-28 17:16:59,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 197 transitions. [2020-10-28 17:16:59,899 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 197 transitions. Word has length 58 [2020-10-28 17:16:59,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:16:59,900 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 197 transitions. [2020-10-28 17:16:59,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 17:16:59,900 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 197 transitions. [2020-10-28 17:16:59,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 17:16:59,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:16:59,902 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:16:59,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 17:16:59,902 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:16:59,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:16:59,903 INFO L82 PathProgramCache]: Analyzing trace with hash -563504864, now seen corresponding path program 6 times [2020-10-28 17:16:59,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:16:59,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727672405] [2020-10-28 17:16:59,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:16:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:16:59,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:00,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:00,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:00,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:00,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:00,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:00,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:00,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:00,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:00,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:00,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:01,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:03,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:03,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 17:17:03,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 17:17:03,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3936 [2020-10-28 17:17:03,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:03,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 17:17:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:17:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 17:17:03,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:03,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:17:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:03,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:03,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:03,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:17:03,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:03,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:17:03,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:03,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:03,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:17:03,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:03,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:17:03,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:03,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:17:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:03,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:03,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:04,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:04,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:04,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:04,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:04,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:04,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:04,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:04,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:04,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:04,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:04,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:04,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:06,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:06,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:17:06,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 17:17:06,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2384 [2020-10-28 17:17:06,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:06,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:06,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 17:17:06,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:06,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:17:06,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:06,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:06,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:06,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:06,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:06,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:06,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:06,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:06,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:07,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:07,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:17:07,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 17:17:07,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 949 [2020-10-28 17:17:07,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:07,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:07,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 17:17:07,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:07,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:17:07,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:07,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:07,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:07,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:07,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:07,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:07,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:07,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:07,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:07,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:17:07,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:17:07,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-28 17:17:07,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:07,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:17:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:07,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:17:07,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:07,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:07,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:07,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:07,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:08,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:08,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:17:08,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:17:08,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 17:17:08,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:08,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:17:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:17:08,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:08,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:08,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:08,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:17:08,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:08,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:17:08,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:08,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:08,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:17:08,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:08,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:17:08,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:08,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:17:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:08,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:08,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:08,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:17:08,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:08,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:17:08,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:08,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:17:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:17:08,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:17:08,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:08,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:17:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:08,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:08,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:08,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:17:08,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:17:08,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:08,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:17:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:17:08,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:08,382 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-28 17:17:08,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727672405] [2020-10-28 17:17:08,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:17:08,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 17:17:08,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447413799] [2020-10-28 17:17:08,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 17:17:08,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:17:08,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 17:17:08,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:17:08,384 INFO L87 Difference]: Start difference. First operand 142 states and 197 transitions. Second operand 23 states. [2020-10-28 17:17:10,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:17:10,902 INFO L93 Difference]: Finished difference Result 183 states and 254 transitions. [2020-10-28 17:17:10,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:17:10,903 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2020-10-28 17:17:10,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:17:10,904 INFO L225 Difference]: With dead ends: 183 [2020-10-28 17:17:10,905 INFO L226 Difference]: Without dead ends: 178 [2020-10-28 17:17:10,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=190, Invalid=1370, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 17:17:10,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-28 17:17:10,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 152. [2020-10-28 17:17:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-28 17:17:10,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 213 transitions. [2020-10-28 17:17:10,923 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 213 transitions. Word has length 65 [2020-10-28 17:17:10,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:17:10,923 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 213 transitions. [2020-10-28 17:17:10,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 17:17:10,924 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 213 transitions. [2020-10-28 17:17:10,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 17:17:10,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:17:10,925 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:17:10,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 17:17:10,925 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:17:10,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:17:10,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1277251808, now seen corresponding path program 7 times [2020-10-28 17:17:10,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:17:10,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504182723] [2020-10-28 17:17:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:17:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:10,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:11,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:11,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:11,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:11,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:11,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:11,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:11,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:11,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:11,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:11,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:11,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:12,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:15,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:15,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 17:17:15,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 17:17:15,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4827 [2020-10-28 17:17:15,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:15,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 17:17:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:17:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 17:17:15,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:15,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:17:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:15,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:15,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:15,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:17:15,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:15,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:17:15,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:15,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:17:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:17:15,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:15,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:17:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:15,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:15,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:15,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:15,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:15,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:15,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:15,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:16,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:16,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:16,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:16,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:16,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:16,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:16,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:16,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:18,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:18,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:17:18,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 17:17:18,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2601 [2020-10-28 17:17:18,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:18,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:18,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 17:17:18,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:18,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:17:18,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:18,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:18,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:18,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:18,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:18,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:18,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:18,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:18,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:18,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:19,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:19,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:17:19,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 17:17:19,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1280 [2020-10-28 17:17:19,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:19,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:19,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 17:17:19,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:19,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:17:19,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:19,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:19,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:19,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:19,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:19,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:19,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:19,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:20,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:20,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:17:20,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:17:20,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-28 17:17:20,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:20,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:20,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:17:20,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:20,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:17:20,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:20,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:20,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:20,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:20,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:20,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:20,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:17:20,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:17:20,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 17:17:20,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:20,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:20,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:17:20,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:20,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:17:20,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:20,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:20,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:20,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:20,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:17:20,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:20,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:17:20,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:20,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:17:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:17:20,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:20,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:17:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:20,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:20,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:20,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:17:20,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:20,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:17:20,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:20,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:20,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:17:20,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:17:20,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:17:20,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:20,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:17:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:20,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:20,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:20,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:17:20,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:20,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:17:20,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:20,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:17:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:17:20,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:17:20,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504182723] [2020-10-28 17:17:20,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:17:20,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 17:17:20,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108155066] [2020-10-28 17:17:20,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 17:17:20,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:17:20,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 17:17:20,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:17:20,648 INFO L87 Difference]: Start difference. First operand 152 states and 213 transitions. Second operand 23 states. [2020-10-28 17:17:22,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:17:22,471 INFO L93 Difference]: Finished difference Result 214 states and 307 transitions. [2020-10-28 17:17:22,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:17:22,471 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2020-10-28 17:17:22,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:17:22,473 INFO L225 Difference]: With dead ends: 214 [2020-10-28 17:17:22,473 INFO L226 Difference]: Without dead ends: 209 [2020-10-28 17:17:22,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=194, Invalid=1366, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 17:17:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-28 17:17:22,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 149. [2020-10-28 17:17:22,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-28 17:17:22,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 208 transitions. [2020-10-28 17:17:22,496 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 208 transitions. Word has length 65 [2020-10-28 17:17:22,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:17:22,496 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 208 transitions. [2020-10-28 17:17:22,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 17:17:22,497 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 208 transitions. [2020-10-28 17:17:22,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 17:17:22,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:17:22,498 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:17:22,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 17:17:22,498 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:17:22,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:17:22,499 INFO L82 PathProgramCache]: Analyzing trace with hash -663894752, now seen corresponding path program 8 times [2020-10-28 17:17:22,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:17:22,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332846478] [2020-10-28 17:17:22,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:17:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:22,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:22,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:22,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:22,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:22,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:22,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:22,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:22,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:23,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:23,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:23,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:26,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:26,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 17:17:26,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 17:17:26,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4023 [2020-10-28 17:17:26,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:26,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 17:17:26,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:17:26,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 17:17:26,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:26,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:17:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:26,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:26,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:26,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:17:26,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:26,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:17:26,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:26,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:26,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:17:26,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:26,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:17:26,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:26,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:17:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:26,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:26,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:26,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:26,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:26,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:26,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:26,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:26,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:26,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:26,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:26,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:26,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:26,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:26,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:27,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:28,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:28,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:17:28,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 17:17:28,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1835 [2020-10-28 17:17:28,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:28,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:28,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 17:17:28,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:28,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:17:28,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:28,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:28,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:28,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:28,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:28,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:28,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:28,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:28,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:29,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:29,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:17:29,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:17:29,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 627 [2020-10-28 17:17:29,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:29,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 17:17:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:17:29,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:29,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:29,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:29,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:29,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:29,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:29,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:29,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:17:29,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:17:29,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-28 17:17:29,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:29,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:17:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:17:29,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:29,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:29,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:29,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:29,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:29,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:29,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:17:29,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:17:29,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 17:17:29,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:29,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:17:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:17:29,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:29,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:29,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:29,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:29,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:17:29,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:29,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:17:29,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:29,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:17:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:17:29,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:29,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:17:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:29,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:30,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:30,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:17:30,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:30,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:17:30,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:30,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:17:30,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:17:30,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:17:30,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:30,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:17:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:30,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:30,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:30,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:17:30,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:30,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:17:30,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:30,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:30,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:17:30,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:30,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:17:30,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 18 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:17:30,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332846478] [2020-10-28 17:17:30,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:17:30,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 17:17:30,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517694608] [2020-10-28 17:17:30,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 17:17:30,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:17:30,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 17:17:30,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:17:30,132 INFO L87 Difference]: Start difference. First operand 149 states and 208 transitions. Second operand 25 states. [2020-10-28 17:17:30,654 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-10-28 17:17:30,984 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-10-28 17:17:31,136 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-10-28 17:17:31,355 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-28 17:17:31,530 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-28 17:17:31,748 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-10-28 17:17:31,985 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-10-28 17:17:32,454 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-10-28 17:17:33,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:17:33,056 INFO L93 Difference]: Finished difference Result 212 states and 302 transitions. [2020-10-28 17:17:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 17:17:33,057 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 65 [2020-10-28 17:17:33,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:17:33,059 INFO L225 Difference]: With dead ends: 212 [2020-10-28 17:17:33,059 INFO L226 Difference]: Without dead ends: 207 [2020-10-28 17:17:33,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=235, Invalid=1571, Unknown=0, NotChecked=0, Total=1806 [2020-10-28 17:17:33,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-28 17:17:33,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 152. [2020-10-28 17:17:33,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-28 17:17:33,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 213 transitions. [2020-10-28 17:17:33,081 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 213 transitions. Word has length 65 [2020-10-28 17:17:33,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:17:33,082 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 213 transitions. [2020-10-28 17:17:33,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 17:17:33,082 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 213 transitions. [2020-10-28 17:17:33,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 17:17:33,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:17:33,084 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:17:33,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 17:17:33,084 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:17:33,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:17:33,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1687236736, now seen corresponding path program 9 times [2020-10-28 17:17:33,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:17:33,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522464297] [2020-10-28 17:17:33,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:17:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:33,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:33,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:33,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:33,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:33,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:33,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:33,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:33,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:33,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:33,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:33,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:34,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:34,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:37,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 17:17:37,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 17:17:37,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4090 [2020-10-28 17:17:37,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:37,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 17:17:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:17:37,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 17:17:37,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:37,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:17:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:37,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:37,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:17:37,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:37,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:17:37,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:37,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:17:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:17:37,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:37,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:17:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:37,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:37,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:39,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:39,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:17:39,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 17:17:39,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1883 [2020-10-28 17:17:39,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:39,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:39,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 17:17:39,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:39,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:17:39,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:39,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:39,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:39,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:39,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:39,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:39,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:39,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:39,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:39,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:39,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:39,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:40,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:40,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:17:40,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 17:17:40,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1322 [2020-10-28 17:17:40,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:40,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:40,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 17:17:40,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:17:40,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:40,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:40,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:40,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:40,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:40,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:40,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:40,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:40,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:40,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:40,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:17:40,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:17:40,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-28 17:17:40,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:40,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:40,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:17:40,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:40,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:17:40,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:40,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:40,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:40,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:40,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:17:40,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:40,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 17:17:40,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:40,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:17:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:17:40,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:41,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:41,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:41,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:41,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:17:41,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:41,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 17:17:41,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:41,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:41,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:17:41,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:17:41,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:17:41,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:17:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:41,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:41,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:41,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:17:41,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:41,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:17:41,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:41,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:41,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:17:41,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:17:41,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:17:41,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:41,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:17:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:41,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:41,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:41,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:17:41,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:41,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:17:41,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:41,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:17:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:17:41,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 17:17:41,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522464297] [2020-10-28 17:17:41,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:17:41,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 17:17:41,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809763143] [2020-10-28 17:17:41,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 17:17:41,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:17:41,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 17:17:41,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:17:41,380 INFO L87 Difference]: Start difference. First operand 152 states and 213 transitions. Second operand 23 states. [2020-10-28 17:17:43,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:17:43,624 INFO L93 Difference]: Finished difference Result 214 states and 308 transitions. [2020-10-28 17:17:43,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 17:17:43,625 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2020-10-28 17:17:43,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:17:43,627 INFO L225 Difference]: With dead ends: 214 [2020-10-28 17:17:43,627 INFO L226 Difference]: Without dead ends: 209 [2020-10-28 17:17:43,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=213, Invalid=1427, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 17:17:43,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-28 17:17:43,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 155. [2020-10-28 17:17:43,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-28 17:17:43,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 218 transitions. [2020-10-28 17:17:43,651 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 218 transitions. Word has length 65 [2020-10-28 17:17:43,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:17:43,651 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 218 transitions. [2020-10-28 17:17:43,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 17:17:43,651 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 218 transitions. [2020-10-28 17:17:43,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 17:17:43,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:17:43,653 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:17:43,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 17:17:43,654 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:17:43,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:17:43,654 INFO L82 PathProgramCache]: Analyzing trace with hash 2092440146, now seen corresponding path program 9 times [2020-10-28 17:17:43,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:17:43,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271422582] [2020-10-28 17:17:43,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:17:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:43,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:43,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:43,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:43,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:44,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:44,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:44,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:44,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:44,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:44,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:44,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:44,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:44,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:44,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:47,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:47,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:17:47,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 17:17:47,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3363 [2020-10-28 17:17:47,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:47,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:47,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 17:17:47,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:17:47,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 17:17:47,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:47,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:17:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:47,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:47,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:47,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:17:47,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:47,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:17:47,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:47,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:17:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:17:47,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:47,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:17:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:47,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:47,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:47,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:47,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:47,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:47,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:47,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:47,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:47,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:47,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:47,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:47,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:47,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:47,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:48,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:48,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:48,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:49,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:50,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:52,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:52,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 17:17:52,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 17:17:52,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:17:52,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:52,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:52,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 17:17:52,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:52,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 17:17:52,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:52,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:52,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:52,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:52,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:17:52,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:52,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 17:17:52,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:52,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 17:17:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:52,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:17:52,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:52,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:52,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:52,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:52,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:17:52,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:52,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 17:17:52,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:52,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 17:17:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:17:52,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:52,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:52,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:52,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:52,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:17:52,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:52,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 17:17:52,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:52,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:52,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:17:52,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:52,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:17:52,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:52,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:52,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:52,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:52,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:17:52,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:52,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 17:17:52,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:52,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:17:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:17:52,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:53,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:53,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:53,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:53,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:17:53,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:53,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:17:53,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:53,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:53,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:17:53,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:53,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:17:53,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:53,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:17:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:53,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:53,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:53,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:17:53,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:53,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:17:53,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:53,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:53,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:17:53,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:17:53,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:17:53,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 48 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-28 17:17:53,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271422582] [2020-10-28 17:17:53,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:17:53,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 17:17:53,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922097691] [2020-10-28 17:17:53,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 17:17:53,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:17:53,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 17:17:53,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2020-10-28 17:17:53,196 INFO L87 Difference]: Start difference. First operand 155 states and 218 transitions. Second operand 26 states. [2020-10-28 17:17:55,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:17:55,536 INFO L93 Difference]: Finished difference Result 242 states and 351 transitions. [2020-10-28 17:17:55,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 17:17:55,537 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 66 [2020-10-28 17:17:55,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:17:55,539 INFO L225 Difference]: With dead ends: 242 [2020-10-28 17:17:55,540 INFO L226 Difference]: Without dead ends: 237 [2020-10-28 17:17:55,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=261, Invalid=1719, Unknown=0, NotChecked=0, Total=1980 [2020-10-28 17:17:55,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-28 17:17:55,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 176. [2020-10-28 17:17:55,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-28 17:17:55,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 251 transitions. [2020-10-28 17:17:55,565 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 251 transitions. Word has length 66 [2020-10-28 17:17:55,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:17:55,565 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 251 transitions. [2020-10-28 17:17:55,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 17:17:55,566 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 251 transitions. [2020-10-28 17:17:55,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 17:17:55,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:17:55,567 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:17:55,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 17:17:55,568 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:17:55,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:17:55,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1395110984, now seen corresponding path program 4 times [2020-10-28 17:17:55,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:17:55,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467136533] [2020-10-28 17:17:55,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:17:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:55,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:55,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:55,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 17:17:55,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:55,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-28 17:17:55,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:55,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:55,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 17:17:55,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:17:55,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 17:17:55,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:55,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:17:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:55,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:55,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:55,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:17:55,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:55,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:17:55,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:55,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:55,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:17:55,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:55,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:17:55,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:55,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:17:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:55,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:55,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:55,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:17:55,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:55,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 17:17:55,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:55,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:55,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:17:55,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:55,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:17:55,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:55,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:55,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:55,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:55,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:17:55,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:55,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:17:55,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:55,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:55,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:17:55,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:55,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:17:55,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:56,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:56,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:56,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:56,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:17:56,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:56,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:17:56,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:56,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:56,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:17:56,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:56,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:17:56,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:56,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:17:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:56,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:56,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:56,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:17:56,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:56,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:17:56,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:56,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:56,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:17:56,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:17:56,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:17:56,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:56,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:17:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:56,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:56,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:56,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:17:56,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:56,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:17:56,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:56,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:56,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:17:56,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:56,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:17:56,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:56,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:17:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:56,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:56,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:56,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:17:56,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:56,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:17:56,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:56,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:56,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:17:56,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:56,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:17:56,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 17:17:56,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467136533] [2020-10-28 17:17:56,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:17:56,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 17:17:56,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235551658] [2020-10-28 17:17:56,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 17:17:56,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:17:56,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 17:17:56,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:17:56,277 INFO L87 Difference]: Start difference. First operand 176 states and 251 transitions. Second operand 18 states. [2020-10-28 17:17:57,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:17:57,593 INFO L93 Difference]: Finished difference Result 195 states and 276 transitions. [2020-10-28 17:17:57,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:17:57,594 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2020-10-28 17:17:57,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:17:57,596 INFO L225 Difference]: With dead ends: 195 [2020-10-28 17:17:57,596 INFO L226 Difference]: Without dead ends: 190 [2020-10-28 17:17:57,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2020-10-28 17:17:57,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-28 17:17:57,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 184. [2020-10-28 17:17:57,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-28 17:17:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 263 transitions. [2020-10-28 17:17:57,616 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 263 transitions. Word has length 56 [2020-10-28 17:17:57,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:17:57,617 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 263 transitions. [2020-10-28 17:17:57,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 17:17:57,617 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 263 transitions. [2020-10-28 17:17:57,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 17:17:57,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:17:57,618 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:17:57,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 17:17:57,619 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:17:57,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:17:57,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1195024664, now seen corresponding path program 10 times [2020-10-28 17:17:57,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:17:57,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129060488] [2020-10-28 17:17:57,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:17:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:57,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:57,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:57,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 17:17:57,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:57,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-28 17:17:57,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:57,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 17:17:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:17:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 17:17:57,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:57,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:17:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:57,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:57,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:57,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:17:57,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:57,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:17:57,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:57,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:17:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:17:57,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:57,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:17:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:57,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:57,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:57,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:17:57,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:57,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 17:17:57,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:57,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:17:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:17:57,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:57,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:58,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:58,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:58,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:17:58,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:58,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:17:58,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:58,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:58,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:17:58,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:58,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:17:58,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:58,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:17:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:58,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:58,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:58,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:17:58,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:58,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:17:58,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:58,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:17:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:17:58,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:58,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:17:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:58,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:58,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:58,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:17:58,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:58,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:17:58,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:58,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:17:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:17:58,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:17:58,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:58,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:17:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:58,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:58,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:17:58,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:58,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:17:58,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:58,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:17:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:17:58,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:58,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:17:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:58,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:17:58,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:17:58,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:17:58,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:17:58,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:17:58,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:17:58,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:17:58,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:17:58,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:17:58,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:17:58,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:17:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 17:17:58,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129060488] [2020-10-28 17:17:58,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:17:58,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 17:17:58,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211701150] [2020-10-28 17:17:58,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 17:17:58,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:17:58,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 17:17:58,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:17:58,327 INFO L87 Difference]: Start difference. First operand 184 states and 263 transitions. Second operand 18 states. [2020-10-28 17:17:59,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:17:59,692 INFO L93 Difference]: Finished difference Result 203 states and 287 transitions. [2020-10-28 17:17:59,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:17:59,693 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2020-10-28 17:17:59,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:17:59,695 INFO L225 Difference]: With dead ends: 203 [2020-10-28 17:17:59,695 INFO L226 Difference]: Without dead ends: 198 [2020-10-28 17:17:59,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2020-10-28 17:17:59,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-28 17:17:59,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 184. [2020-10-28 17:17:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-28 17:17:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 263 transitions. [2020-10-28 17:17:59,715 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 263 transitions. Word has length 56 [2020-10-28 17:17:59,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:17:59,715 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 263 transitions. [2020-10-28 17:17:59,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 17:17:59,715 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 263 transitions. [2020-10-28 17:17:59,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 17:17:59,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:17:59,717 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:17:59,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 17:17:59,718 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:17:59,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:17:59,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1871060648, now seen corresponding path program 11 times [2020-10-28 17:17:59,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:17:59,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627824959] [2020-10-28 17:17:59,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:17:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:17:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:00,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:00,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 17:18:00,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:00,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-28 17:18:00,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:00,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:00,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 17:18:00,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:18:00,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 17:18:00,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:00,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:18:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:00,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:00,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:00,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:18:00,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:00,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:18:00,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:00,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:00,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:18:00,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:00,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:18:00,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:00,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:18:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:00,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:00,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:00,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:18:00,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:00,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 17:18:00,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:00,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:00,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:18:00,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:00,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:18:00,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:00,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:00,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:00,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:00,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:18:00,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:00,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 17:18:00,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:00,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:18:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:18:00,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:00,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:00,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:00,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:00,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:18:00,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:00,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:18:00,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:00,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:18:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:18:00,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:00,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:18:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:00,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:00,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:00,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:18:00,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:00,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 17:18:00,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:00,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:00,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:18:00,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:18:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:18:00,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:00,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:18:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:00,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:00,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:00,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:18:00,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:00,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:18:00,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:00,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:00,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:18:00,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:00,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:18:00,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:00,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:18:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:00,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:00,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:00,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:18:00,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:00,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:18:00,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:00,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:00,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:18:00,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:00,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:18:00,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:18:00,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627824959] [2020-10-28 17:18:00,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:18:00,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:18:00,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716431619] [2020-10-28 17:18:00,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:18:00,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:18:00,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:18:00,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:18:00,639 INFO L87 Difference]: Start difference. First operand 184 states and 263 transitions. Second operand 17 states. [2020-10-28 17:18:01,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:18:01,853 INFO L93 Difference]: Finished difference Result 206 states and 294 transitions. [2020-10-28 17:18:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:18:01,854 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-28 17:18:01,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:18:01,857 INFO L225 Difference]: With dead ends: 206 [2020-10-28 17:18:01,857 INFO L226 Difference]: Without dead ends: 196 [2020-10-28 17:18:01,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2020-10-28 17:18:01,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-28 17:18:01,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 190. [2020-10-28 17:18:01,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-28 17:18:01,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 270 transitions. [2020-10-28 17:18:01,877 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 270 transitions. Word has length 56 [2020-10-28 17:18:01,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:18:01,877 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 270 transitions. [2020-10-28 17:18:01,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:18:01,877 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 270 transitions. [2020-10-28 17:18:01,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 17:18:01,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:18:01,879 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:18:01,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 17:18:01,880 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:18:01,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:18:01,880 INFO L82 PathProgramCache]: Analyzing trace with hash 796177220, now seen corresponding path program 5 times [2020-10-28 17:18:01,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:18:01,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324009802] [2020-10-28 17:18:01,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:18:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:01,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:02,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:02,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:02,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:02,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:02,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:02,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:02,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:02,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:02,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:02,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:03,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:03,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 17:18:03,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 17:18:03,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1769 [2020-10-28 17:18:03,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:03,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:03,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 17:18:03,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:18:03,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 17:18:03,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:18:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:03,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:03,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:18:03,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:03,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:18:03,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:03,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:03,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:18:03,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:03,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:18:03,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:03,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:18:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:03,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:03,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:03,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:03,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:03,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:03,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:03,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:04,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:04,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:04,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:18:04,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 17:18:04,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-10-28 17:18:04,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:04,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:04,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 17:18:04,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:04,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:18:04,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:04,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:04,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:04,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:04,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:04,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:04,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:04,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:18:04,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:18:04,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-28 17:18:04,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:04,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:04,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:18:04,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:04,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:18:04,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:04,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:04,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:04,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:04,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:18:04,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:04,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:18:04,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:04,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:18:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:18:04,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:04,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:04,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:04,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:04,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:18:04,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:04,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:18:04,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:04,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:18:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:18:04,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:04,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:18:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:04,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:04,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:04,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:18:04,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:04,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:18:04,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:04,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:04,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:18:04,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:18:04,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:18:04,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:04,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:18:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:04,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:05,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:05,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:18:05,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:05,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:18:05,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:05,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:05,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:18:05,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:05,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:18:05,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:05,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:18:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:05,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:05,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:05,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:18:05,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:05,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:18:05,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:05,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:18:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:18:05,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:18:05,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324009802] [2020-10-28 17:18:05,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:18:05,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 17:18:05,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113126631] [2020-10-28 17:18:05,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 17:18:05,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:18:05,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 17:18:05,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:18:05,137 INFO L87 Difference]: Start difference. First operand 190 states and 270 transitions. Second operand 23 states. [2020-10-28 17:18:07,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:18:07,215 INFO L93 Difference]: Finished difference Result 209 states and 292 transitions. [2020-10-28 17:18:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:18:07,219 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 64 [2020-10-28 17:18:07,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:18:07,221 INFO L225 Difference]: With dead ends: 209 [2020-10-28 17:18:07,221 INFO L226 Difference]: Without dead ends: 204 [2020-10-28 17:18:07,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=197, Invalid=1285, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 17:18:07,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-28 17:18:07,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 190. [2020-10-28 17:18:07,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-28 17:18:07,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 270 transitions. [2020-10-28 17:18:07,240 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 270 transitions. Word has length 64 [2020-10-28 17:18:07,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:18:07,240 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 270 transitions. [2020-10-28 17:18:07,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 17:18:07,240 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 270 transitions. [2020-10-28 17:18:07,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 17:18:07,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:18:07,242 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:18:07,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 17:18:07,242 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:18:07,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:18:07,243 INFO L82 PathProgramCache]: Analyzing trace with hash 41695204, now seen corresponding path program 12 times [2020-10-28 17:18:07,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:18:07,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424725081] [2020-10-28 17:18:07,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:18:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:07,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:07,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:07,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 17:18:07,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:07,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-28 17:18:07,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:07,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 17:18:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:18:07,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 17:18:07,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:07,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:18:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:07,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:07,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:07,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:18:07,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:07,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:18:07,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:07,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:18:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:18:07,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:07,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:18:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:07,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:07,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:07,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:18:07,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:07,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 17:18:07,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:07,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:07,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 17:18:07,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:07,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:18:07,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:07,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:07,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:07,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:07,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:18:07,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:07,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 17:18:07,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:07,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:07,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:18:07,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:07,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:18:07,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:07,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:07,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:07,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:07,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:18:07,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:07,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 17:18:07,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:07,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:07,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:18:07,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:07,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:18:07,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:07,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:07,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:07,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:07,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:18:07,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:07,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:18:07,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:07,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:18:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:18:07,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:08,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:18:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:08,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:08,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:08,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:18:08,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:08,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:18:08,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:08,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:08,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:18:08,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:18:08,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:18:08,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:08,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:18:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:08,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:08,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:08,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:18:08,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:08,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:18:08,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:08,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:18:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:18:08,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:08,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:18:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:08,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:08,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:08,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:18:08,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:08,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:18:08,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:08,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:08,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:18:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:18:08,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:08,310 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 17:18:08,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424725081] [2020-10-28 17:18:08,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:18:08,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 17:18:08,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952240744] [2020-10-28 17:18:08,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 17:18:08,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:18:08,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 17:18:08,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:18:08,312 INFO L87 Difference]: Start difference. First operand 190 states and 270 transitions. Second operand 20 states. [2020-10-28 17:18:08,741 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-28 17:18:10,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:18:10,273 INFO L93 Difference]: Finished difference Result 226 states and 320 transitions. [2020-10-28 17:18:10,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:18:10,274 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2020-10-28 17:18:10,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:18:10,275 INFO L225 Difference]: With dead ends: 226 [2020-10-28 17:18:10,275 INFO L226 Difference]: Without dead ends: 221 [2020-10-28 17:18:10,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 17:18:10,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-28 17:18:10,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 197. [2020-10-28 17:18:10,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-28 17:18:10,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 281 transitions. [2020-10-28 17:18:10,299 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 281 transitions. Word has length 64 [2020-10-28 17:18:10,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:18:10,300 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 281 transitions. [2020-10-28 17:18:10,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 17:18:10,300 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 281 transitions. [2020-10-28 17:18:10,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 17:18:10,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:18:10,302 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:18:10,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 17:18:10,302 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:18:10,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:18:10,303 INFO L82 PathProgramCache]: Analyzing trace with hash -609655164, now seen corresponding path program 13 times [2020-10-28 17:18:10,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:18:10,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247962458] [2020-10-28 17:18:10,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:18:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:10,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:10,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:10,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 17:18:10,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:10,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-28 17:18:10,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:10,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 17:18:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:18:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 17:18:10,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:10,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:18:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:10,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:10,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:10,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:18:10,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:10,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:18:10,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:10,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:18:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:10,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:18:10,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:10,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:18:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:10,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:10,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:10,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:18:10,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:10,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 17:18:10,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:10,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 17:18:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:10,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:18:10,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:10,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:10,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:11,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:11,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:18:11,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:11,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 17:18:11,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:11,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:11,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:18:11,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:11,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:18:11,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:11,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:11,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:11,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:11,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:18:11,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:11,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 17:18:11,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:11,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:11,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:18:11,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:11,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:18:11,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:11,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:11,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:11,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:11,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:18:11,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:11,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:18:11,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:11,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:11,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:18:11,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:11,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:18:11,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:11,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:18:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:11,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:11,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:11,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:18:11,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:11,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:18:11,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:11,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:11,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:18:11,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:18:11,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:18:11,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:11,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:18:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:11,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:11,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:11,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:18:11,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:11,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:18:11,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:11,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:18:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:18:11,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:11,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:18:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:11,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:11,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:11,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:18:11,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:11,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:18:11,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:11,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:11,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:18:11,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:11,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:18:11,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:11,497 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 17:18:11,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247962458] [2020-10-28 17:18:11,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:18:11,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 17:18:11,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310744787] [2020-10-28 17:18:11,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 17:18:11,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:18:11,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 17:18:11,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:18:11,499 INFO L87 Difference]: Start difference. First operand 197 states and 281 transitions. Second operand 20 states. [2020-10-28 17:18:11,923 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-28 17:18:13,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:18:13,529 INFO L93 Difference]: Finished difference Result 225 states and 317 transitions. [2020-10-28 17:18:13,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:18:13,530 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2020-10-28 17:18:13,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:18:13,532 INFO L225 Difference]: With dead ends: 225 [2020-10-28 17:18:13,532 INFO L226 Difference]: Without dead ends: 220 [2020-10-28 17:18:13,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 17:18:13,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-28 17:18:13,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 201. [2020-10-28 17:18:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-28 17:18:13,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 287 transitions. [2020-10-28 17:18:13,563 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 287 transitions. Word has length 64 [2020-10-28 17:18:13,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:18:13,563 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 287 transitions. [2020-10-28 17:18:13,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 17:18:13,563 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 287 transitions. [2020-10-28 17:18:13,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 17:18:13,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:18:13,565 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:18:13,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 17:18:13,565 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:18:13,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:18:13,566 INFO L82 PathProgramCache]: Analyzing trace with hash 144826852, now seen corresponding path program 14 times [2020-10-28 17:18:13,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:18:13,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630769668] [2020-10-28 17:18:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:18:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:13,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:13,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:13,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:13,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:13,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:13,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:13,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:13,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:13,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:14,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:14,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:16,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:16,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 17:18:16,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 17:18:16,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3151 [2020-10-28 17:18:16,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:16,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:16,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 17:18:16,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:18:16,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 17:18:16,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:16,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:18:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:16,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:16,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:16,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:18:16,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:16,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:18:16,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:16,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:18:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:18:16,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:16,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:18:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:16,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:16,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:16,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:16,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:16,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:16,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:16,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:16,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:16,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:17,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:17,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:17,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:18:17,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 17:18:17,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-10-28 17:18:17,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:17,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 17:18:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:18:17,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:17,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:17,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:17,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:17,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:17,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:17,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:17,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:18,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:18,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:18:18,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:18:18,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-28 17:18:18,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:18,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:18:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:18:18,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:18,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:18,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:18,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:18,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:18:18,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:18,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 17:18:18,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:18,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:18:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:18:18,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:18,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:18,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:18,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:18,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:18:18,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:18,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:18:18,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:18,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:18:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:18:18,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:18,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:18:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:18,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:18,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:18,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:18:18,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 17:18:18,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:18,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:18:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:18:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:18:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:18,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:18:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:18,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:18,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:18,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:18:18,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:18,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:18:18,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:18,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:18,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:18:18,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:18,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:18:18,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:18,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:18:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:18,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:18,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:18,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:18:18,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:18,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:18:18,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:18,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:18:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:18:18,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 17:18:18,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630769668] [2020-10-28 17:18:18,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:18:18,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 17:18:18,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460891976] [2020-10-28 17:18:18,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 17:18:18,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:18:18,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 17:18:18,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:18:18,640 INFO L87 Difference]: Start difference. First operand 201 states and 287 transitions. Second operand 22 states. [2020-10-28 17:18:20,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:18:20,728 INFO L93 Difference]: Finished difference Result 258 states and 367 transitions. [2020-10-28 17:18:20,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:18:20,729 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 64 [2020-10-28 17:18:20,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:18:20,731 INFO L225 Difference]: With dead ends: 258 [2020-10-28 17:18:20,731 INFO L226 Difference]: Without dead ends: 253 [2020-10-28 17:18:20,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=183, Invalid=1223, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 17:18:20,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-28 17:18:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 219. [2020-10-28 17:18:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-28 17:18:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 317 transitions. [2020-10-28 17:18:20,754 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 317 transitions. Word has length 64 [2020-10-28 17:18:20,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:18:20,754 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 317 transitions. [2020-10-28 17:18:20,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 17:18:20,755 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 317 transitions. [2020-10-28 17:18:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 17:18:20,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:18:20,757 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:18:20,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 17:18:20,757 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:18:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:18:20,757 INFO L82 PathProgramCache]: Analyzing trace with hash -533218908, now seen corresponding path program 15 times [2020-10-28 17:18:20,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:18:20,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505532349] [2020-10-28 17:18:20,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:18:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:20,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:20,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:20,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:20,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:21,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:21,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:21,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:21,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:21,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:21,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:21,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:24,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:24,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 17:18:24,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 17:18:24,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3678 [2020-10-28 17:18:24,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:24,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 17:18:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:18:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 17:18:24,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:24,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:18:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:24,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:24,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:24,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:18:24,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:24,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:18:24,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:24,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:18:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:18:24,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:24,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:18:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:24,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:24,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:24,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:24,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:24,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:24,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:24,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:24,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:24,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:25,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:25,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:18:25,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 17:18:25,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-10-28 17:18:25,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:25,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 17:18:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:25,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:18:25,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:25,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:25,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:25,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:25,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:18:25,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:25,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 17:18:25,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:25,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:25,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:18:25,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:25,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:18:25,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:25,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:25,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:25,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:25,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:18:25,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:25,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 17:18:25,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:25,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:25,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:18:25,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:25,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:18:25,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:25,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:25,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:25,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:25,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:18:25,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:25,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:18:25,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:25,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:18:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:18:25,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:25,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:18:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:25,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:25,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:25,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:18:25,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:25,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:18:25,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:25,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:25,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:18:25,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:18:25,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:18:25,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:25,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:18:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:25,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:26,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:26,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:18:26,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:26,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:18:26,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:26,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:26,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:18:26,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:26,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:18:26,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:26,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:18:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:26,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:26,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:26,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:18:26,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:26,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:18:26,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:26,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:26,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:18:26,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:26,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:18:26,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 30 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 17:18:26,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505532349] [2020-10-28 17:18:26,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:18:26,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 17:18:26,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943155428] [2020-10-28 17:18:26,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 17:18:26,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:18:26,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 17:18:26,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:18:26,136 INFO L87 Difference]: Start difference. First operand 219 states and 317 transitions. Second operand 21 states. [2020-10-28 17:18:28,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:18:28,149 INFO L93 Difference]: Finished difference Result 235 states and 336 transitions. [2020-10-28 17:18:28,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:18:28,150 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 64 [2020-10-28 17:18:28,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:18:28,153 INFO L225 Difference]: With dead ends: 235 [2020-10-28 17:18:28,153 INFO L226 Difference]: Without dead ends: 230 [2020-10-28 17:18:28,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=146, Invalid=1114, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 17:18:28,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-28 17:18:28,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 219. [2020-10-28 17:18:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-28 17:18:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 317 transitions. [2020-10-28 17:18:28,175 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 317 transitions. Word has length 64 [2020-10-28 17:18:28,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:18:28,175 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 317 transitions. [2020-10-28 17:18:28,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 17:18:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 317 transitions. [2020-10-28 17:18:28,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 17:18:28,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:18:28,177 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:18:28,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 17:18:28,177 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:18:28,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:18:28,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1184569276, now seen corresponding path program 16 times [2020-10-28 17:18:28,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:18:28,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875424441] [2020-10-28 17:18:28,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:18:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:28,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:28,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:28,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:28,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:28,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:28,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:28,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:28,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:28,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:28,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:28,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:29,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:31,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:31,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 17:18:31,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 17:18:31,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3049 [2020-10-28 17:18:31,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:31,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:31,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 17:18:31,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:18:31,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 17:18:31,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:31,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:18:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:31,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:31,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:31,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:18:31,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:31,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:18:31,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:31,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:31,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:18:31,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:31,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:18:31,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:31,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:18:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:31,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:31,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:31,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:31,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:31,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:31,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:31,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:31,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:31,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:31,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:31,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:32,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:32,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:32,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:18:32,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 17:18:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1495 [2020-10-28 17:18:32,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:32,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 17:18:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:32,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:18:32,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:32,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:32,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:32,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:32,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:32,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:32,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:32,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:33,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:33,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:33,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:18:33,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:18:33,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-28 17:18:33,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:33,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:18:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:18:33,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:33,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:33,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:33,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:33,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:33,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:33,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:18:33,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:18:33,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 17:18:33,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:33,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:18:33,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:33,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:18:33,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:33,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:33,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:33,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:33,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:18:33,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:33,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:18:33,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:33,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:33,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:18:33,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:33,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:18:33,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:33,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:18:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:33,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:33,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:33,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:18:33,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:33,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:18:33,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:33,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:33,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:18:33,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:18:33,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:18:33,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:33,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:18:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:33,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:33,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:33,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:18:33,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:33,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:18:33,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:33,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:18:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:18:33,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:33,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:18:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:33,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:33,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:33,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:18:33,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:33,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:18:33,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:33,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:18:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:18:33,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-28 17:18:33,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875424441] [2020-10-28 17:18:33,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:18:33,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 17:18:33,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924716399] [2020-10-28 17:18:33,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 17:18:33,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:18:33,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 17:18:33,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:18:33,963 INFO L87 Difference]: Start difference. First operand 219 states and 317 transitions. Second operand 22 states. [2020-10-28 17:18:36,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:18:36,279 INFO L93 Difference]: Finished difference Result 280 states and 415 transitions. [2020-10-28 17:18:36,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:18:36,280 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 64 [2020-10-28 17:18:36,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:18:36,282 INFO L225 Difference]: With dead ends: 280 [2020-10-28 17:18:36,282 INFO L226 Difference]: Without dead ends: 275 [2020-10-28 17:18:36,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=182, Invalid=1300, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 17:18:36,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-28 17:18:36,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 222. [2020-10-28 17:18:36,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-28 17:18:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 322 transitions. [2020-10-28 17:18:36,308 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 322 transitions. Word has length 64 [2020-10-28 17:18:36,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:18:36,309 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 322 transitions. [2020-10-28 17:18:36,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 17:18:36,309 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 322 transitions. [2020-10-28 17:18:36,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 17:18:36,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:18:36,311 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:18:36,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 17:18:36,311 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:18:36,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:18:36,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1978269224, now seen corresponding path program 17 times [2020-10-28 17:18:36,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:18:36,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750260128] [2020-10-28 17:18:36,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:18:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:36,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:36,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:36,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:36,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:36,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:36,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:36,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:36,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:36,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:36,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:36,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:37,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:37,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:39,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:39,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 17:18:39,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 17:18:39,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3465 [2020-10-28 17:18:39,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:39,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 17:18:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:18:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 17:18:39,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:39,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:18:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:39,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:39,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:39,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:18:39,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:39,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:18:39,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:39,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:39,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:18:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:18:39,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:39,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:18:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:39,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:39,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:39,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:39,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:40,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:40,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:40,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:40,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:40,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:40,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:40,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:40,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:41,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:42,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:42,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:18:42,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 17:18:42,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2933 [2020-10-28 17:18:42,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:42,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:42,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 17:18:42,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:18:42,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:42,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:42,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:42,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:42,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:42,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:42,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:42,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:43,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:43,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:18:43,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:18:43,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-28 17:18:43,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:43,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:43,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 17:18:43,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:43,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:18:43,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:43,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:43,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:43,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:43,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:43,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:43,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:43,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:43,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:18:43,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:18:43,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-28 17:18:43,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:43,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:43,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:18:43,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:43,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:18:43,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:43,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:43,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:43,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:43,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:43,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:43,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:18:43,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:18:43,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 17:18:43,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:43,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:43,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:18:43,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:43,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:18:43,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:43,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 17:18:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:43,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:43,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:43,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:18:43,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:43,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:18:43,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:43,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:43,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:18:43,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:43,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:18:43,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:43,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:18:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:43,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:43,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:43,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:18:43,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:43,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 17:18:43,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:43,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:43,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:18:43,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:18:43,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:18:43,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:44,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:18:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:44,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:44,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:44,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:18:44,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:44,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:18:44,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:44,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:18:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:18:44,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:44,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:18:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:44,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:18:44,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:18:44,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:18:44,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:18:44,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:18:44,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:18:44,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:18:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:18:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:18:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:18:44,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:18:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 54 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 17:18:44,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750260128] [2020-10-28 17:18:44,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:18:44,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 17:18:44,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909878458] [2020-10-28 17:18:44,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 17:18:44,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:18:44,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 17:18:44,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:18:44,247 INFO L87 Difference]: Start difference. First operand 222 states and 322 transitions. Second operand 25 states. [2020-10-28 17:18:46,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:18:46,726 INFO L93 Difference]: Finished difference Result 286 states and 413 transitions. [2020-10-28 17:18:46,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:18:46,727 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 72 [2020-10-28 17:18:46,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:18:46,729 INFO L225 Difference]: With dead ends: 286 [2020-10-28 17:18:46,729 INFO L226 Difference]: Without dead ends: 281 [2020-10-28 17:18:46,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=216, Invalid=1506, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 17:18:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-28 17:18:46,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 221. [2020-10-28 17:18:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-28 17:18:46,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 319 transitions. [2020-10-28 17:18:46,752 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 319 transitions. Word has length 72 [2020-10-28 17:18:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:18:46,753 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 319 transitions. [2020-10-28 17:18:46,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 17:18:46,753 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 319 transitions. [2020-10-28 17:18:46,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 17:18:46,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:18:46,756 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:18:46,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-28 17:18:46,757 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:18:46,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:18:46,757 INFO L82 PathProgramCache]: Analyzing trace with hash -789953128, now seen corresponding path program 18 times [2020-10-28 17:18:46,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:18:46,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623020293] [2020-10-28 17:18:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:18:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:18:46,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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