/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:17:17,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:17:17,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:17:17,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:17:17,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:17:17,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:17:17,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:17:17,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:17:17,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:17:17,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:17:17,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:17:17,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:17:17,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:17:17,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:17:17,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:17:17,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:17:17,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:17:17,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:17:17,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:17:17,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:17:17,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:17:17,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:17:17,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:17:17,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:17:17,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:17:17,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:17:17,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:17:17,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:17:17,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:17:17,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:17:17,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:17:17,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:17:17,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:17:17,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:17:17,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:17:17,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:17:17,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:17:17,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:17:17,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:17:17,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:17:17,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:17:17,269 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 [2020-09-25 04:17:17,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:17:17,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:17:17,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:17:17,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:17:17,308 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:17:17,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:17:17,309 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:17:17,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:17:17,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:17:17,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:17:17,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:17:17,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:17:17,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:17:17,310 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:17:17,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:17:17,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:17:17,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:17:17,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:17:17,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:17:17,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:17:17,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:17:17,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:17:17,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:17:17,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:17:17,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:17:17,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:17:17,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:17:17,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:17:17,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:17:17,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement 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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=true; [2020-09-25 04:17:17,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:17:17,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:17:17,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:17:17,826 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:17:17,826 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:17:17,827 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-25 04:17:17,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c4f7879a/ce8583ea84a34fc8ad744042d019f5cc/FLAGd8df4f9d1 [2020-09-25 04:17:18,470 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:17:18,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-25 04:17:18,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c4f7879a/ce8583ea84a34fc8ad744042d019f5cc/FLAGd8df4f9d1 [2020-09-25 04:17:18,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c4f7879a/ce8583ea84a34fc8ad744042d019f5cc [2020-09-25 04:17:18,773 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:17:18,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:17:18,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:17:18,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:17:18,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:17:18,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:17:18" (1/1) ... [2020-09-25 04:17:18,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:18, skipping insertion in model container [2020-09-25 04:17:18,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:17:18" (1/1) ... [2020-09-25 04:17:18,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:17:18,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:17:19,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:17:19,116 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:17:19,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:17:19,157 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:17:19,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:19 WrapperNode [2020-09-25 04:17:19,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:17:19,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:17:19,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:17:19,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:17:19,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:19" (1/1) ... [2020-09-25 04:17:19,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:19" (1/1) ... [2020-09-25 04:17:19,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:19" (1/1) ... [2020-09-25 04:17:19,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:19" (1/1) ... [2020-09-25 04:17:19,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:19" (1/1) ... [2020-09-25 04:17:19,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:19" (1/1) ... [2020-09-25 04:17:19,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:19" (1/1) ... [2020-09-25 04:17:19,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:17:19,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:17:19,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:17:19,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:17:19,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:19" (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 [2020-09-25 04:17:19,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:17:19,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:17:19,361 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-09-25 04:17:19,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:17:19,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:17:19,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:17:19,362 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-09-25 04:17:19,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:17:19,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:17:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:17:19,642 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:17:19,643 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:17:19,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:17:19 BoogieIcfgContainer [2020-09-25 04:17:19,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:17:19,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:17:19,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:17:19,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:17:19,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:17:18" (1/3) ... [2020-09-25 04:17:19,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274bc6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:17:19, skipping insertion in model container [2020-09-25 04:17:19,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:19" (2/3) ... [2020-09-25 04:17:19,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274bc6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:17:19, skipping insertion in model container [2020-09-25 04:17:19,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:17:19" (3/3) ... [2020-09-25 04:17:19,664 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2020-09-25 04:17:19,675 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:17:19,684 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:17:19,705 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:17:19,737 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:17:19,738 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:17:19,738 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:17:19,738 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:17:19,738 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:17:19,738 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:17:19,739 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:17:19,739 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:17:19,765 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 04:17:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 04:17:19,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:19,776 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] [2020-09-25 04:17:19,777 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:19,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:19,784 INFO L82 PathProgramCache]: Analyzing trace with hash 2060884630, now seen corresponding path program 1 times [2020-09-25 04:17:19,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:19,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602903922] [2020-09-25 04:17:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:20,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:20,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:20,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:20,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 04:17:20,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:17:20,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-09-25 04:17:20,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:20,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:17:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:17:20,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:17:21,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:21,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:21,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:21,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:21,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:17:21,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:21,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:21,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:21,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:17:21,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:21,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:21,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:21,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:21,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:17:21,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:21,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:21,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:21,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:21,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:17:21,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:21,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:17:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:21,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:21,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:21,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:21,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:17:21,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:21,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:17:21,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602903922] [2020-09-25 04:17:21,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:21,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:17:21,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148746050] [2020-09-25 04:17:21,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:17:21,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:21,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:17:21,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:17:21,208 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 04:17:21,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:21,337 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-09-25 04:17:21,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:17:21,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-09-25 04:17:21,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:21,354 INFO L225 Difference]: With dead ends: 64 [2020-09-25 04:17:21,354 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 04:17:21,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:17:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 04:17:21,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 04:17:21,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 04:17:21,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 04:17:21,418 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2020-09-25 04:17:21,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:21,418 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 04:17:21,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:17:21,419 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 04:17:21,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 04:17:21,422 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:21,422 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:21,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:17:21,423 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:21,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:21,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1309951713, now seen corresponding path program 1 times [2020-09-25 04:17:21,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:21,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087237733] [2020-09-25 04:17:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:21,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:21,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 04:17:21,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:21,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 04:17:21,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:21,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 04:17:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:17:21,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:21,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:21,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:21,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:21,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:21,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:21,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:21,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:21,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:21,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:21,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:21,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:21,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:21,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:17:21,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:21,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:21,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:21,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:21,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:21,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:21,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:21,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:17:21,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:21,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:21,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:21,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 04:17:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:21,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:21,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:21,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:21,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:17:21,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:21,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:21,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:21,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:21,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:17:21,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 04:17:21,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087237733] [2020-09-25 04:17:21,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:17:21,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:17:21,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011638303] [2020-09-25 04:17:21,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:17:21,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:21,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:17:21,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:17:21,640 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 5 states. [2020-09-25 04:17:21,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:21,724 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2020-09-25 04:17:21,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:17:21,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-09-25 04:17:21,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:21,728 INFO L225 Difference]: With dead ends: 51 [2020-09-25 04:17:21,728 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 04:17:21,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:17:21,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 04:17:21,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 04:17:21,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 04:17:21,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-09-25 04:17:21,740 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 46 [2020-09-25 04:17:21,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:21,741 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-09-25 04:17:21,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:17:21,741 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-09-25 04:17:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 04:17:21,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:21,745 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:21,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:17:21,745 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:21,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:21,746 INFO L82 PathProgramCache]: Analyzing trace with hash -793708719, now seen corresponding path program 1 times [2020-09-25 04:17:21,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:21,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686895512] [2020-09-25 04:17:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:21,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:21,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:22,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:22,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:22,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:22,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:23,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 04:17:23,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:17:23,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2041 [2020-09-25 04:17:23,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:23,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 04:17:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:17:23,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:23,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:23,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:23,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:23,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:23,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:23,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:23,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:23,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:23,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:23,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:23,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:23,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:23,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:17:23,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:23,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:23,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:23,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:23,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:23,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:23,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:23,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:17:23,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:23,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:23,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:23,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 04:17:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:23,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:23,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:24,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:24,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:17:24,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:17:24,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-09-25 04:17:24,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:24,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:17:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:24,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:24,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:24,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:24,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:24,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:24,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:17:24,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:24,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:24,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:24,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:17:24,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:24,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:24,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:24,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:24,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:24,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:24,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:17:24,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:24,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:24,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:24,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-25 04:17:24,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686895512] [2020-09-25 04:17:24,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:24,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:17:24,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196705849] [2020-09-25 04:17:24,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:17:24,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:24,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:17:24,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:17:24,516 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-09-25 04:17:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:24,619 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-09-25 04:17:24,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:17:24,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-09-25 04:17:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:24,622 INFO L225 Difference]: With dead ends: 53 [2020-09-25 04:17:24,622 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 04:17:24,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:17:24,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 04:17:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2020-09-25 04:17:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 04:17:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-09-25 04:17:24,631 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 65 [2020-09-25 04:17:24,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:24,631 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-09-25 04:17:24,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:17:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-09-25 04:17:24,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 04:17:24,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:24,634 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1] [2020-09-25 04:17:24,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:17:24,634 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:24,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:24,635 INFO L82 PathProgramCache]: Analyzing trace with hash 942191350, now seen corresponding path program 2 times [2020-09-25 04:17:24,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:24,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721522319] [2020-09-25 04:17:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:24,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:25,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:25,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:17:25,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:25,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-09-25 04:17:25,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:25,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:25,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 04:17:25,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:17:25,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:17:25,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:25,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:25,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:25,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:25,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:25,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:25,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:25,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:25,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:25,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:25,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:25,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:25,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:25,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:25,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:25,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 04:17:25,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:25,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:17:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:17:25,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:25,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:25,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:25,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:25,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:25,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:25,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 04:17:25,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:25,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:25,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:25,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:25,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:17:25,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:25,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 04:17:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:25,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:25,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:25,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:25,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:25,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 04:17:25,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:25,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:25,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:17:25,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:25,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:17:25,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:25,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:25,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:25,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:25,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:25,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:25,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 04:17:25,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:25,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:25,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:25,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:25,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:17:25,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 04:17:26,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721522319] [2020-09-25 04:17:26,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:26,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 04:17:26,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112563265] [2020-09-25 04:17:26,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 04:17:26,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:26,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 04:17:26,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-09-25 04:17:26,082 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 17 states. [2020-09-25 04:17:26,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:26,727 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-09-25 04:17:26,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:17:26,727 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-09-25 04:17:26,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:26,730 INFO L225 Difference]: With dead ends: 68 [2020-09-25 04:17:26,730 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 04:17:26,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2020-09-25 04:17:26,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 04:17:26,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2020-09-25 04:17:26,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 04:17:26,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-09-25 04:17:26,743 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 56 [2020-09-25 04:17:26,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:26,743 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-09-25 04:17:26,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 04:17:26,744 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-09-25 04:17:26,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 04:17:26,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:26,746 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:26,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:17:26,746 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:26,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:26,746 INFO L82 PathProgramCache]: Analyzing trace with hash -156864787, now seen corresponding path program 2 times [2020-09-25 04:17:26,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:26,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629952727] [2020-09-25 04:17:26,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:26,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:26,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:26,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:27,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:27,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:29,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 04:17:29,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:17:29,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2621 [2020-09-25 04:17:29,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:29,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:29,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:29,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 04:17:29,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:29,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:29,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:29,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:29,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:29,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:29,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:29,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:29,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:29,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:29,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:29,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:29,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:29,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:29,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:29,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:29,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:29,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:17:29,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:29,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:29,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:29,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:29,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:29,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:29,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:29,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:29,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:29,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:29,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:17:29,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:29,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:29,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:29,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 04:17:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:29,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:29,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:17:29,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:17:29,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 04:17:29,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:29,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:17:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:29,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:29,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:29,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:29,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:17:29,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:29,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:17:29,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:29,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:29,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:29,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 04:17:29,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:29,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:29,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:29,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:29,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:29,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:29,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:17:29,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:29,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:29,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:29,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:17:29,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:29,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:29,744 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 04:17:29,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629952727] [2020-09-25 04:17:29,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:17:29,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:17:29,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401682858] [2020-09-25 04:17:29,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:17:29,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:29,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:17:29,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:17:29,749 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 5 states. [2020-09-25 04:17:29,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:29,848 INFO L93 Difference]: Finished difference Result 90 states and 118 transitions. [2020-09-25 04:17:29,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:17:29,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-09-25 04:17:29,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:29,851 INFO L225 Difference]: With dead ends: 90 [2020-09-25 04:17:29,851 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 04:17:29,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:17:29,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 04:17:29,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-25 04:17:29,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 04:17:29,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-09-25 04:17:29,871 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 65 [2020-09-25 04:17:29,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:29,875 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-09-25 04:17:29,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:17:29,876 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-09-25 04:17:29,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 04:17:29,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:29,878 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:29,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:17:29,878 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:29,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:29,878 INFO L82 PathProgramCache]: Analyzing trace with hash 387973505, now seen corresponding path program 3 times [2020-09-25 04:17:29,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:29,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349019334] [2020-09-25 04:17:29,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:29,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:30,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:30,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 04:17:30,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:30,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-09-25 04:17:30,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:30,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 04:17:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:17:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 04:17:30,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:30,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:30,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:30,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:30,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:30,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:30,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:30,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:30,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:30,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:30,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:30,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:30,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:30,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:30,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:30,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:30,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:30,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:30,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 04:17:30,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:30,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:30,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:17:30,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:30,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:17:30,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:31,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:31,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:31,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:31,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:31,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:31,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:17:31,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:31,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:31,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:31,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:31,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:17:31,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:31,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 04:17:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:31,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:31,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:31,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 04:17:31,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:31,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-25 04:17:31,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:31,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:17:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:17:31,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:31,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:31,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:31,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:31,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:31,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:31,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 04:17:31,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:31,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:31,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:17:31,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:31,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:17:31,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:31,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:31,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:31,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:31,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:31,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:31,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 04:17:31,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:31,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:31,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:31,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:31,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:17:31,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:31,731 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 04:17:31,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349019334] [2020-09-25 04:17:31,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:31,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 04:17:31,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835926595] [2020-09-25 04:17:31,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 04:17:31,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:31,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 04:17:31,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-09-25 04:17:31,734 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 18 states. [2020-09-25 04:17:32,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:32,377 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2020-09-25 04:17:32,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 04:17:32,378 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-09-25 04:17:32,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:32,379 INFO L225 Difference]: With dead ends: 73 [2020-09-25 04:17:32,379 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 04:17:32,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2020-09-25 04:17:32,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 04:17:32,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-09-25 04:17:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 04:17:32,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2020-09-25 04:17:32,393 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 66 [2020-09-25 04:17:32,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:32,393 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2020-09-25 04:17:32,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 04:17:32,394 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2020-09-25 04:17:32,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 04:17:32,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:32,395 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 04:17:32,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:17:32,396 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:32,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:32,396 INFO L82 PathProgramCache]: Analyzing trace with hash 681092950, now seen corresponding path program 4 times [2020-09-25 04:17:32,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:32,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183911060] [2020-09-25 04:17:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:32,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:33,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:33,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 04:17:33,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:33,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1059 [2020-09-25 04:17:33,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:33,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:33,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 04:17:33,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:17:33,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 04:17:33,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:33,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:33,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:33,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:33,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:33,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:33,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:33,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:33,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:33,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:33,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:33,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:33,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:33,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:33,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:33,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:33,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:33,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:33,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 04:17:33,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:33,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:33,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:17:33,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:33,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:17:33,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:33,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:33,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:33,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:33,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:33,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:33,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:17:33,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:33,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:33,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:33,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:33,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:17:33,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:33,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 04:17:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:33,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:34,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:34,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 04:17:34,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:34,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-25 04:17:34,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:34,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:34,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 04:17:34,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:34,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:17:34,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:34,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:34,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:34,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:34,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 04:17:34,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:34,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 04:17:34,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:34,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:17:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:17:34,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:34,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:34,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:34,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:34,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:34,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:34,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 04:17:34,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:34,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:17:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:17:34,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:34,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:34,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:34,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:34,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:34,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:34,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 04:17:34,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:34,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:17:34,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 04:17:34,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183911060] [2020-09-25 04:17:34,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:34,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 04:17:34,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263598304] [2020-09-25 04:17:34,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 04:17:34,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:34,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 04:17:34,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2020-09-25 04:17:34,972 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand 21 states. [2020-09-25 04:17:35,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:35,822 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2020-09-25 04:17:35,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 04:17:35,823 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 76 [2020-09-25 04:17:35,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:35,825 INFO L225 Difference]: With dead ends: 78 [2020-09-25 04:17:35,825 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 04:17:35,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 04:17:35,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 04:17:35,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2020-09-25 04:17:35,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 04:17:35,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2020-09-25 04:17:35,836 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 76 [2020-09-25 04:17:35,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:35,837 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2020-09-25 04:17:35,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 04:17:35,837 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2020-09-25 04:17:35,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 04:17:35,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:35,839 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:35,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:17:35,839 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:35,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:35,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1957858366, now seen corresponding path program 3 times [2020-09-25 04:17:35,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:35,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065211272] [2020-09-25 04:17:35,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:35,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:35,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:35,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:36,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:36,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:36,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:36,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:37,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:37,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:37,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:37,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:40,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:40,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 04:17:40,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:17:40,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:17:40,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:40,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:40,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:40,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 04:17:40,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 04:17:40,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:40,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:40,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:40,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:40,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:40,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:40,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:40,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:40,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:40,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:40,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:40,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:40,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:40,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:40,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:40,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:40,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:40,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:40,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:17:40,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:40,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:40,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:40,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:40,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:40,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:40,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:40,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:40,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:40,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:40,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:40,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:17:40,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:40,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:40,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:40,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:40,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:40,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 04:17:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:40,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:40,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:40,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:41,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:41,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:41,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:41,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:41,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:42,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:42,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 04:17:42,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:17:42,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1957 [2020-09-25 04:17:42,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:42,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 04:17:42,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:42,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:42,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:42,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:42,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:42,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:43,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:17:43,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:17:43,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-09-25 04:17:43,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:43,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:43,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:43,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:43,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:17:43,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:43,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:43,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:43,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:43,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:43,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:17:43,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:43,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:43,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:43,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:43,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:17:43,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:43,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:43,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:43,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:43,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:43,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:17:43,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:43,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:43,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 29 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 04:17:43,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065211272] [2020-09-25 04:17:43,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:43,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:17:43,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116833023] [2020-09-25 04:17:43,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:17:43,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:43,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:17:43,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:17:43,559 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand 6 states. [2020-09-25 04:17:43,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:43,625 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2020-09-25 04:17:43,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:17:43,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-09-25 04:17:43,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:43,627 INFO L225 Difference]: With dead ends: 67 [2020-09-25 04:17:43,627 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 04:17:43,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:17:43,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 04:17:43,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-09-25 04:17:43,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 04:17:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-09-25 04:17:43,645 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 75 [2020-09-25 04:17:43,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:43,645 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-09-25 04:17:43,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:17:43,646 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-09-25 04:17:43,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 04:17:43,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:43,648 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 04:17:43,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:17:43,648 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:43,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:43,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1857769359, now seen corresponding path program 4 times [2020-09-25 04:17:43,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:43,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871264845] [2020-09-25 04:17:43,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:43,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:43,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:45,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:45,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:45,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:47,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:47,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:47,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:48,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 04:17:48,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:17:48,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:17:48,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:48,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:48,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:48,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 04:17:48,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:48,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:48,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:48,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:48,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:48,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:48,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:17:48,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:48,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:48,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:48,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:48,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:48,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:48,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:48,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:48,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:17:48,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:48,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:48,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:48,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:48,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:48,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:48,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:48,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:17:48,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:48,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:48,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:48,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:48,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:48,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:48,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 04:17:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:49,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:49,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:50,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:50,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 04:17:50,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:17:50,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1506 [2020-09-25 04:17:50,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:50,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:50,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:50,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:17:50,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:50,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:50,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:50,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:50,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:50,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:50,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:50,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:50,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 04:17:50,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:17:50,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-09-25 04:17:50,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:50,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:50,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:50,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 04:17:50,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:50,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:50,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:50,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:50,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:50,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:50,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:51,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:51,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:17:51,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:17:51,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-09-25 04:17:51,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:51,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:17:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:17:51,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:51,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:17:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:51,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:51,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:51,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:51,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:51,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:17:51,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:51,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:51,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:51,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:51,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:17:51,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:51,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:51,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:51,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:51,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:51,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:51,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:17:51,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:51,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:51,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:51,442 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-09-25 04:17:51,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871264845] [2020-09-25 04:17:51,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:51,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:17:51,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281945500] [2020-09-25 04:17:51,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:17:51,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:51,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:17:51,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:17:51,445 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 6 states. [2020-09-25 04:17:51,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:51,515 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2020-09-25 04:17:51,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:17:51,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-09-25 04:17:51,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:51,516 INFO L225 Difference]: With dead ends: 95 [2020-09-25 04:17:51,516 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 04:17:51,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:17:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 04:17:51,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-25 04:17:51,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 04:17:51,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-09-25 04:17:51,525 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 85 [2020-09-25 04:17:51,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:51,525 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-09-25 04:17:51,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:17:51,526 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-09-25 04:17:51,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 04:17:51,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:51,526 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:51,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:17:51,527 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:51,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:51,527 INFO L82 PathProgramCache]: Analyzing trace with hash -516505397, now seen corresponding path program 5 times [2020-09-25 04:17:51,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:51,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24379270] [2020-09-25 04:17:51,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:51,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:52,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:52,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 04:17:52,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:52,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-09-25 04:17:52,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:52,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 04:17:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:17:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 04:17:52,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:52,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:52,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:52,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:52,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:52,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:52,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:52,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:52,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:52,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:52,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:52,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:52,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:52,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:52,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:52,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 04:17:52,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:52,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 04:17:52,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:52,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:52,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 04:17:52,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:52,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:17:52,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:52,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:52,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:52,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:52,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:52,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:52,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 04:17:52,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:52,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:52,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:17:52,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:52,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:17:52,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:52,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:52,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:52,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:52,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:52,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:52,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 04:17:52,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:52,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:17:52,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:52,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 04:17:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:52,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:52,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:52,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:52,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:52,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:17:52,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:52,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:52,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:17:52,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:52,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:17:52,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:52,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:52,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:52,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:52,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:52,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:17:52,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:52,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:17:52,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 04:17:52,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24379270] [2020-09-25 04:17:52,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:52,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 04:17:52,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829039438] [2020-09-25 04:17:52,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 04:17:52,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:52,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 04:17:52,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-25 04:17:52,929 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 18 states. [2020-09-25 04:17:53,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:53,491 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-09-25 04:17:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 04:17:53,491 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-09-25 04:17:53,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:53,492 INFO L225 Difference]: With dead ends: 62 [2020-09-25 04:17:53,492 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 04:17:53,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2020-09-25 04:17:53,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 04:17:53,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-09-25 04:17:53,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:17:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-09-25 04:17:53,498 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 66 [2020-09-25 04:17:53,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:53,498 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-09-25 04:17:53,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 04:17:53,499 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-09-25 04:17:53,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 04:17:53,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:53,499 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 04:17:53,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 04:17:53,500 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:53,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:53,500 INFO L82 PathProgramCache]: Analyzing trace with hash -972388074, now seen corresponding path program 6 times [2020-09-25 04:17:53,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:53,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936614403] [2020-09-25 04:17:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:53,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:54,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:54,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 04:17:54,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:54,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 846 [2020-09-25 04:17:54,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:54,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 04:17:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:17:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 04:17:54,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:54,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:54,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:54,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:54,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:54,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:54,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:54,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:54,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:54,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:54,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:54,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:54,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:54,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 04:17:54,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:54,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 04:17:54,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:54,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:54,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 04:17:54,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:54,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:17:54,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:54,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:54,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:54,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:54,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:54,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:54,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 04:17:54,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:54,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:17:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:17:54,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:54,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:54,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:54,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:54,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:54,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:17:54,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:54,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:54,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:54,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:17:54,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:54,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 04:17:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:54,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:55,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:55,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 04:17:55,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:55,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 04:17:55,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:55,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:55,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:17:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:17:55,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:55,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:55,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:55,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:55,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:55,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:55,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 04:17:55,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:55,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:55,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:17:55,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:55,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:17:55,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:55,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:55,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:55,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:55,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:55,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:55,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:17:55,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:55,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:55,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:17:55,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:55,288 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 54 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-09-25 04:17:55,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936614403] [2020-09-25 04:17:55,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:55,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 04:17:55,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012876735] [2020-09-25 04:17:55,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 04:17:55,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:55,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 04:17:55,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:17:55,290 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 16 states. [2020-09-25 04:17:55,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:55,833 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-09-25 04:17:55,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 04:17:55,834 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-09-25 04:17:55,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:55,834 INFO L225 Difference]: With dead ends: 62 [2020-09-25 04:17:55,835 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 04:17:55,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2020-09-25 04:17:55,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 04:17:55,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-09-25 04:17:55,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:17:55,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2020-09-25 04:17:55,840 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 76 [2020-09-25 04:17:55,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:55,840 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2020-09-25 04:17:55,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 04:17:55,840 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2020-09-25 04:17:55,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 04:17:55,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:55,841 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 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] [2020-09-25 04:17:55,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 04:17:55,842 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:55,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:55,842 INFO L82 PathProgramCache]: Analyzing trace with hash -27101013, now seen corresponding path program 7 times [2020-09-25 04:17:55,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:55,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769221142] [2020-09-25 04:17:55,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:55,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:56,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:56,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 04:17:56,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:56,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 981 [2020-09-25 04:17:56,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:56,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-25 04:17:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:17:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 04:17:56,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:56,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:56,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:56,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:56,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:56,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:56,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:56,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:56,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:56,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:56,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:56,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:56,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:56,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:57,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:57,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 04:17:57,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:57,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 04:17:57,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:57,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:57,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 04:17:57,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:57,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:17:57,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:57,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:57,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:57,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:57,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:57,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 04:17:57,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:57,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:17:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:17:57,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:57,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:57,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:57,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:57,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:57,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:17:57,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:57,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:57,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:57,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:17:57,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:57,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 04:17:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:57,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:57,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:57,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 04:17:57,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:57,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-09-25 04:17:57,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:57,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 04:17:57,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:57,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:17:57,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:57,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:57,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:57,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:57,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 04:17:57,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:57,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 04:17:57,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:57,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:17:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:17:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:58,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:58,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:58,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:58,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:58,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:58,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 04:17:58,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:58,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:58,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:17:58,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:58,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:17:58,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:58,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:58,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:58,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:58,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:58,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:58,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:17:58,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:58,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:58,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:17:58,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:58,274 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 20 proven. 92 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-25 04:17:58,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769221142] [2020-09-25 04:17:58,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:58,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 04:17:58,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720215613] [2020-09-25 04:17:58,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 04:17:58,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:58,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 04:17:58,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2020-09-25 04:17:58,277 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 22 states. [2020-09-25 04:17:59,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:59,223 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-09-25 04:17:59,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 04:17:59,223 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 86 [2020-09-25 04:17:59,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:59,225 INFO L225 Difference]: With dead ends: 67 [2020-09-25 04:17:59,225 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 04:17:59,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 04:17:59,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 04:17:59,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-09-25 04:17:59,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 04:17:59,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-09-25 04:17:59,232 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 86 [2020-09-25 04:17:59,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:59,232 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-09-25 04:17:59,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 04:17:59,233 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-09-25 04:17:59,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 04:17:59,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:59,234 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 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] [2020-09-25 04:17:59,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 04:17:59,234 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:59,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:59,235 INFO L82 PathProgramCache]: Analyzing trace with hash -694157514, now seen corresponding path program 8 times [2020-09-25 04:17:59,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:59,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383197143] [2020-09-25 04:17:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:59,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:00,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:00,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 04:18:00,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:00,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1392 [2020-09-25 04:18:00,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:00,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-25 04:18:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:18:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 04:18:00,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:00,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:00,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:00,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:00,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:00,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:00,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:18:00,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:00,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:00,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:00,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:00,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:00,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:00,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:18:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:00,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:00,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:00,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 04:18:00,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:00,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 04:18:00,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:00,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 04:18:00,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:00,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:18:00,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:00,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:18:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:00,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:00,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:00,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:18:00,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:00,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 04:18:00,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:00,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:18:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:18:00,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:01,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:18:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:01,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:01,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:01,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:18:01,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:01,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 04:18:01,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:01,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:18:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:18:01,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:01,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 04:18:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:01,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:01,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:01,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:18:01,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:01,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 624 [2020-09-25 04:18:01,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:01,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:01,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 04:18:01,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:01,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 04:18:01,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:01,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:18:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:02,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:02,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 04:18:02,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:02,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-25 04:18:02,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:02,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 04:18:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:18:02,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:02,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:18:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:02,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:02,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:02,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 04:18:02,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:02,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 04:18:02,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:02,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:18:02,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:02,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:18:02,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:02,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:18:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:02,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:02,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:02,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:18:02,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:02,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 04:18:02,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:02,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:02,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:18:02,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:02,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:18:02,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:02,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:18:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:02,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:02,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:02,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:18:02,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:02,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:18:02,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:02,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:18:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:18:02,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:02,758 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 24 proven. 126 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 04:18:02,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383197143] [2020-09-25 04:18:02,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:18:02,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-25 04:18:02,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616704686] [2020-09-25 04:18:02,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-25 04:18:02,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:02,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-25 04:18:02,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2020-09-25 04:18:02,761 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 24 states. [2020-09-25 04:18:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:04,124 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2020-09-25 04:18:04,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 04:18:04,124 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 96 [2020-09-25 04:18:04,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:04,125 INFO L225 Difference]: With dead ends: 72 [2020-09-25 04:18:04,126 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 04:18:04,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 04:18:04,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 04:18:04,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-09-25 04:18:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 04:18:04,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2020-09-25 04:18:04,132 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 96 [2020-09-25 04:18:04,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:04,133 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2020-09-25 04:18:04,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-25 04:18:04,133 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2020-09-25 04:18:04,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-25 04:18:04,134 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:04,134 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 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] [2020-09-25 04:18:04,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 04:18:04,135 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:04,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:04,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1979672437, now seen corresponding path program 9 times [2020-09-25 04:18:04,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:04,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392826957] [2020-09-25 04:18:04,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:04,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking...