/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:51:25,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:51:25,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:51:25,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:51:25,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:51:25,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:51:25,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:51:25,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:51:25,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:51:25,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:51:25,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:51:25,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:51:25,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:51:25,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:51:25,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:51:25,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:51:25,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:51:25,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:51:25,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:51:25,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:51:25,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:51:25,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:51:25,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:51:25,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:51:25,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:51:25,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:51:25,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:51:25,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:51:25,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:51:25,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:51:25,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:51:25,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:51:25,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:51:25,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:51:25,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:51:25,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:51:25,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:51:25,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:51:25,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:51:25,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:51:25,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:51:25,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:51:25,425 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:51:25,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:51:25,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:51:25,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:51:25,432 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:51:25,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:51:25,432 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:51:25,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:51:25,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:51:25,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:51:25,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:51:25,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:51:25,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:51:25,434 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:51:25,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:51:25,434 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:51:25,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:51:25,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:51:25,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:51:25,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:51:25,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:51:25,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:51:25,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:51:25,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:51:25,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:51:25,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:51:25,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:51:25,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:51:25,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:51:25,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:51:25,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:51:25,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:51:25,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:51:25,992 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:51:25,996 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:51:25,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label28.c [2020-10-28 12:51:26,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad07ed443/0c4ae904efb2408f89d15fa930fc99b4/FLAGfa5454c0c [2020-10-28 12:51:26,920 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:51:26,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label28.c [2020-10-28 12:51:26,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad07ed443/0c4ae904efb2408f89d15fa930fc99b4/FLAGfa5454c0c [2020-10-28 12:51:27,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad07ed443/0c4ae904efb2408f89d15fa930fc99b4 [2020-10-28 12:51:27,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:51:27,203 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:51:27,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:51:27,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:51:27,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:51:27,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:51:27" (1/1) ... [2020-10-28 12:51:27,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd71d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:51:27, skipping insertion in model container [2020-10-28 12:51:27,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:51:27" (1/1) ... [2020-10-28 12:51:27,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:51:27,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:51:27,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:51:27,795 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:51:28,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:51:28,113 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:51:28,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:51:28 WrapperNode [2020-10-28 12:51:28,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:51:28,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:51:28,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:51:28,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:51:28,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:51:28" (1/1) ... [2020-10-28 12:51:28,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:51:28" (1/1) ... [2020-10-28 12:51:28,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:51:28" (1/1) ... [2020-10-28 12:51:28,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:51:28" (1/1) ... [2020-10-28 12:51:28,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:51:28" (1/1) ... [2020-10-28 12:51:28,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:51:28" (1/1) ... [2020-10-28 12:51:28,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:51:28" (1/1) ... [2020-10-28 12:51:28,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:51:28,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:51:28,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:51:28,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:51:28,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:51:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:51:28,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:51:28,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:51:28,352 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:51:28,353 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:51:28,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:51:28,354 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:51:28,354 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:51:28,354 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:51:28,354 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:51:28,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:51:28,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:51:28,356 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:51:28,356 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:51:28,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:51:28,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:51:28,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:51:28,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:51:28,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:51:28,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:51:30,132 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:51:30,132 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:51:30,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:51:30 BoogieIcfgContainer [2020-10-28 12:51:30,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:51:30,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:51:30,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:51:30,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:51:30,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:51:27" (1/3) ... [2020-10-28 12:51:30,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5eb4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:51:30, skipping insertion in model container [2020-10-28 12:51:30,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:51:28" (2/3) ... [2020-10-28 12:51:30,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5eb4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:51:30, skipping insertion in model container [2020-10-28 12:51:30,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:51:30" (3/3) ... [2020-10-28 12:51:30,146 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label28.c [2020-10-28 12:51:30,160 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:51:30,166 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:51:30,182 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:51:30,216 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:51:30,216 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:51:30,216 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:51:30,216 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:51:30,216 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:51:30,216 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:51:30,217 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:51:30,217 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:51:30,245 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-28 12:51:30,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 12:51:30,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:51:30,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:51:30,253 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:51:30,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:51:30,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1614314178, now seen corresponding path program 1 times [2020-10-28 12:51:30,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:51:30,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304019360] [2020-10-28 12:51:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:51:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:30,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:30,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:51:30,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 12:51:30,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:51:30,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-10-28 12:51:30,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:51:30,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:51:30,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:51:30,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:51:30,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 12:51:30,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:51:31,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:51:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:31,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:31,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:51:31,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:51:31,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:51:31,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:51:31,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:51:31,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:51:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:51:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:51:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:51:31,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:51:31,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:51:31,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304019360] [2020-10-28 12:51:31,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:51:31,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:51:31,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217075060] [2020-10-28 12:51:31,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:51:31,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:51:31,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:51:31,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:51:31,199 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-28 12:51:33,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:51:33,920 INFO L93 Difference]: Finished difference Result 703 states and 1247 transitions. [2020-10-28 12:51:33,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:51:33,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-28 12:51:33,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:51:33,939 INFO L225 Difference]: With dead ends: 703 [2020-10-28 12:51:33,939 INFO L226 Difference]: Without dead ends: 381 [2020-10-28 12:51:33,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:51:33,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-28 12:51:34,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 375. [2020-10-28 12:51:34,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-28 12:51:34,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 605 transitions. [2020-10-28 12:51:34,053 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 605 transitions. Word has length 17 [2020-10-28 12:51:34,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:51:34,054 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 605 transitions. [2020-10-28 12:51:34,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:51:34,055 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 605 transitions. [2020-10-28 12:51:34,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 12:51:34,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:51:34,061 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:51:34,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:51:34,061 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:51:34,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:51:34,064 INFO L82 PathProgramCache]: Analyzing trace with hash 2125431121, now seen corresponding path program 1 times [2020-10-28 12:51:34,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:51:34,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713439131] [2020-10-28 12:51:34,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:51:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:34,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:34,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:35,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:51:35,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 12:51:35,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:51:35,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1234 [2020-10-28 12:51:35,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:51:35,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:51:35,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:51:35,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:51:35,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:51:35,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:51:35,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:51:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:35,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:35,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:51:35,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:51:35,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:51:35,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:51:35,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:51:35,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:51:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:51:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:51:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:51:35,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:51:35,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:51:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:35,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:35,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:51:35,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:51:35,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:51:35,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 12:51:35,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:51:35,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:51:35,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:51:35,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:51:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:51:35,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:51:35,740 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:51:35,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713439131] [2020-10-28 12:51:35,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:51:35,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:51:35,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930618013] [2020-10-28 12:51:35,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:51:35,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:51:35,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:51:35,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:51:35,744 INFO L87 Difference]: Start difference. First operand 375 states and 605 transitions. Second operand 7 states. [2020-10-28 12:51:35,906 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 12:51:38,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:51:38,777 INFO L93 Difference]: Finished difference Result 1134 states and 1859 transitions. [2020-10-28 12:51:38,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:51:38,784 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-28 12:51:38,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:51:38,795 INFO L225 Difference]: With dead ends: 1134 [2020-10-28 12:51:38,796 INFO L226 Difference]: Without dead ends: 765 [2020-10-28 12:51:38,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:51:38,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2020-10-28 12:51:38,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 567. [2020-10-28 12:51:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-10-28 12:51:38,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 876 transitions. [2020-10-28 12:51:38,905 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 876 transitions. Word has length 86 [2020-10-28 12:51:38,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:51:38,905 INFO L481 AbstractCegarLoop]: Abstraction has 567 states and 876 transitions. [2020-10-28 12:51:38,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:51:38,906 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 876 transitions. [2020-10-28 12:51:38,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 12:51:38,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:51:38,910 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:51:38,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:51:38,911 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:51:38,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:51:38,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1482099117, now seen corresponding path program 1 times [2020-10-28 12:51:38,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:51:38,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49493511] [2020-10-28 12:51:38,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:51:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:38,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:39,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:51:39,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 12:51:39,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:51:39,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-28 12:51:39,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:51:39,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:51:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:51:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:51:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 12:51:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:51:39,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:51:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:39,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:39,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:51:39,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:51:39,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:51:39,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:51:39,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:51:39,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:51:39,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:51:39,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:51:39,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:51:39,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:51:39,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:51:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:39,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:39,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:51:39,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:51:39,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:51:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 12:51:39,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:51:39,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:51:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:51:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:51:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:51:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:51:39,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:51:39,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49493511] [2020-10-28 12:51:39,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:51:39,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:51:39,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408913553] [2020-10-28 12:51:39,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:51:39,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:51:39,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:51:39,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:51:39,772 INFO L87 Difference]: Start difference. First operand 567 states and 876 transitions. Second operand 7 states. [2020-10-28 12:51:42,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:51:42,518 INFO L93 Difference]: Finished difference Result 1558 states and 2527 transitions. [2020-10-28 12:51:42,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:51:42,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-28 12:51:42,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:51:42,529 INFO L225 Difference]: With dead ends: 1558 [2020-10-28 12:51:42,530 INFO L226 Difference]: Without dead ends: 997 [2020-10-28 12:51:42,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:51:42,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-10-28 12:51:42,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 943. [2020-10-28 12:51:42,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-10-28 12:51:42,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1319 transitions. [2020-10-28 12:51:42,604 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1319 transitions. Word has length 100 [2020-10-28 12:51:42,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:51:42,605 INFO L481 AbstractCegarLoop]: Abstraction has 943 states and 1319 transitions. [2020-10-28 12:51:42,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:51:42,605 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1319 transitions. [2020-10-28 12:51:42,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 12:51:42,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:51:42,626 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:51:42,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:51:42,630 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:51:42,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:51:42,632 INFO L82 PathProgramCache]: Analyzing trace with hash 345630258, now seen corresponding path program 1 times [2020-10-28 12:51:42,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:51:42,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905616408] [2020-10-28 12:51:42,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:51:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:42,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:42,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:43,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:46,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:51:46,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 12:51:46,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:51:46,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3349 [2020-10-28 12:51:46,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:51:46,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:51:46,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:51:46,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 12:51:46,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:51:46,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:51:46,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:51:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:46,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:46,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:51:46,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:51:46,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:51:46,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:51:46,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:51:46,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:51:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:51:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:51:46,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:51:46,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:51:46,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:51:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:46,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:46,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:51:46,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:51:46,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:51:46,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 12:51:46,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:51:46,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:51:46,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:51:46,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:51:46,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 12:51:46,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:51:46,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 12:51:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:46,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:46,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:51:46,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:51:46,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:51:46,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 12:51:46,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:51:46,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:51:46,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:51:46,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:51:46,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:51:46,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:51:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:51:46,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905616408] [2020-10-28 12:51:46,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:51:46,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:51:46,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175846191] [2020-10-28 12:51:46,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:51:46,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:51:46,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:51:46,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:51:46,715 INFO L87 Difference]: Start difference. First operand 943 states and 1319 transitions. Second operand 7 states. [2020-10-28 12:51:49,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:51:49,671 INFO L93 Difference]: Finished difference Result 2456 states and 3489 transitions. [2020-10-28 12:51:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:51:49,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-10-28 12:51:49,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:51:49,681 INFO L225 Difference]: With dead ends: 2456 [2020-10-28 12:51:49,681 INFO L226 Difference]: Without dead ends: 955 [2020-10-28 12:51:49,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:51:49,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-10-28 12:51:49,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 937. [2020-10-28 12:51:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2020-10-28 12:51:49,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1073 transitions. [2020-10-28 12:51:49,722 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1073 transitions. Word has length 173 [2020-10-28 12:51:49,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:51:49,722 INFO L481 AbstractCegarLoop]: Abstraction has 937 states and 1073 transitions. [2020-10-28 12:51:49,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:51:49,723 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1073 transitions. [2020-10-28 12:51:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-28 12:51:49,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:51:49,726 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:51:49,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:51:49,726 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:51:49,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:51:49,727 INFO L82 PathProgramCache]: Analyzing trace with hash 232354462, now seen corresponding path program 1 times [2020-10-28 12:51:49,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:51:49,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684620983] [2020-10-28 12:51:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:51:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:49,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:49,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:50,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:51,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:54,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:51:54,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 12:51:54,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:51:54,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4866 [2020-10-28 12:51:54,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:51:54,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:51:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:51:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:51:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 12:51:54,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:51:54,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:51:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:54,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:54,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:51:54,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:51:54,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:51:54,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:51:54,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:51:54,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:51:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:51:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:51:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:51:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:51:54,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:51:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:54,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:55,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:51:55,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 12:51:55,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:51:55,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 12:51:55,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:51:55,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:51:55,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:51:55,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:51:55,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 12:51:55,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:51:55,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 12:51:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:55,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:55,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:51:55,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:51:55,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:51:55,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:51:55,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:51:55,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:51:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:51:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:51:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:51:55,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:51:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:51:55,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684620983] [2020-10-28 12:51:55,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:51:55,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:51:55,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841540598] [2020-10-28 12:51:55,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:51:55,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:51:55,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:51:55,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:51:55,537 INFO L87 Difference]: Start difference. First operand 937 states and 1073 transitions. Second operand 7 states. [2020-10-28 12:51:57,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:51:57,141 INFO L93 Difference]: Finished difference Result 1510 states and 1776 transitions. [2020-10-28 12:51:57,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:51:57,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-28 12:51:57,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:51:57,153 INFO L225 Difference]: With dead ends: 1510 [2020-10-28 12:51:57,153 INFO L226 Difference]: Without dead ends: 945 [2020-10-28 12:51:57,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-28 12:51:57,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2020-10-28 12:51:57,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 937. [2020-10-28 12:51:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2020-10-28 12:51:57,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1071 transitions. [2020-10-28 12:51:57,190 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1071 transitions. Word has length 230 [2020-10-28 12:51:57,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:51:57,190 INFO L481 AbstractCegarLoop]: Abstraction has 937 states and 1071 transitions. [2020-10-28 12:51:57,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:51:57,191 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1071 transitions. [2020-10-28 12:51:57,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-28 12:51:57,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:51:57,195 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:51:57,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:51:57,195 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:51:57,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:51:57,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1014231088, now seen corresponding path program 1 times [2020-10-28 12:51:57,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:51:57,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010867198] [2020-10-28 12:51:57,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:51:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:51:57,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:57,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:51:58,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:00,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:00,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 12:52:00,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:52:00,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3500 [2020-10-28 12:52:00,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:00,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:52:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:52:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-28 12:52:00,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:00,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:52:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:00,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:00,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:52:00,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:00,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:52:00,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:00,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:00,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:52:00,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:00,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:52:00,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:00,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:52:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:00,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:01,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:01,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:52:01,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:01,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-28 12:52:01,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:01,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:01,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:52:01,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:52:01,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 12:52:01,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:01,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-28 12:52:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:01,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:01,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:01,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:52:01,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:01,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:52:01,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:01,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:52:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:01,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:01,330 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:52:01,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010867198] [2020-10-28 12:52:01,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:52:01,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:52:01,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271455808] [2020-10-28 12:52:01,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:52:01,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:52:01,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:52:01,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:52:01,334 INFO L87 Difference]: Start difference. First operand 937 states and 1071 transitions. Second operand 7 states. [2020-10-28 12:52:03,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:52:03,277 INFO L93 Difference]: Finished difference Result 2080 states and 2470 transitions. [2020-10-28 12:52:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:52:03,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-28 12:52:03,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:52:03,286 INFO L225 Difference]: With dead ends: 2080 [2020-10-28 12:52:03,287 INFO L226 Difference]: Without dead ends: 1331 [2020-10-28 12:52:03,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:52:03,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2020-10-28 12:52:03,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1309. [2020-10-28 12:52:03,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1309 states. [2020-10-28 12:52:03,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1468 transitions. [2020-10-28 12:52:03,339 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1468 transitions. Word has length 237 [2020-10-28 12:52:03,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:52:03,339 INFO L481 AbstractCegarLoop]: Abstraction has 1309 states and 1468 transitions. [2020-10-28 12:52:03,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:52:03,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1468 transitions. [2020-10-28 12:52:03,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2020-10-28 12:52:03,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:52:03,355 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:52:03,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:52:03,355 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:52:03,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:52:03,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1849808855, now seen corresponding path program 1 times [2020-10-28 12:52:03,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:52:03,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425855878] [2020-10-28 12:52:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:52:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:03,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:03,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:05,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:06,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:08,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:08,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 625 [2020-10-28 12:52:08,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:52:08,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 12:52:08,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:08,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:52:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-28 12:52:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 294 [2020-10-28 12:52:08,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:08,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:52:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:08,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:08,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:08,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:52:08,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:08,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:52:08,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:08,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:08,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:08,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:08,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:08,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:08,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:52:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:08,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:08,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:08,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:52:08,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:08,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:52:08,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:08,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:08,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:08,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:08,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:08,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:08,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:52:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:08,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:08,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:08,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:52:08,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:08,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 12:52:08,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:08,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:08,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:52:08,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:08,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:52:08,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:08,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:52:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:08,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:09,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:09,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:09,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:52:09,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:52:09,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 12:52:09,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:09,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:52:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:52:09,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:09,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-28 12:52:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:09,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:09,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:09,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:52:09,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:09,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-28 12:52:09,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:09,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:09,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:52:09,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:52:09,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:52:09,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:09,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-10-28 12:52:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:09,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:09,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:09,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:52:09,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:52:09,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:09,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:52:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1022 backedges. 390 proven. 83 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2020-10-28 12:52:10,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425855878] [2020-10-28 12:52:10,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:52:10,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:52:10,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574406590] [2020-10-28 12:52:10,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:52:10,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:52:10,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:52:10,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:52:10,110 INFO L87 Difference]: Start difference. First operand 1309 states and 1468 transitions. Second operand 8 states. [2020-10-28 12:52:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:52:13,231 INFO L93 Difference]: Finished difference Result 3933 states and 4668 transitions. [2020-10-28 12:52:13,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 12:52:13,236 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 605 [2020-10-28 12:52:13,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:52:13,273 INFO L225 Difference]: With dead ends: 3933 [2020-10-28 12:52:13,273 INFO L226 Difference]: Without dead ends: 2996 [2020-10-28 12:52:13,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:52:13,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2020-10-28 12:52:13,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2801. [2020-10-28 12:52:13,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2801 states. [2020-10-28 12:52:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3136 transitions. [2020-10-28 12:52:13,378 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3136 transitions. Word has length 605 [2020-10-28 12:52:13,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:52:13,380 INFO L481 AbstractCegarLoop]: Abstraction has 2801 states and 3136 transitions. [2020-10-28 12:52:13,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:52:13,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3136 transitions. [2020-10-28 12:52:13,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2020-10-28 12:52:13,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:52:13,401 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:52:13,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:52:13,401 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:52:13,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:52:13,404 INFO L82 PathProgramCache]: Analyzing trace with hash -885227647, now seen corresponding path program 1 times [2020-10-28 12:52:13,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:52:13,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171515770] [2020-10-28 12:52:13,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:52:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:13,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:13,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:14,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:17,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:18,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:18,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:18,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 648 [2020-10-28 12:52:18,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:52:18,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 12:52:18,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:18,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:18,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:52:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-28 12:52:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-28 12:52:18,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:52:18,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:52:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:18,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:18,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:18,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:52:18,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:18,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:52:18,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:18,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:18,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:18,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:52:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:18,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:18,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:18,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:52:18,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:18,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:52:18,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:18,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:18,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:18,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:52:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:18,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:18,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:18,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:52:18,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:18,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:52:18,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:18,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:18,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:18,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:18,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:18,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:18,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:52:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:18,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:18,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:18,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 12:52:18,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:18,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 12:52:18,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:18,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:18,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:52:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 12:52:18,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:19,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-10-28 12:52:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:19,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:19,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:19,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:52:19,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:19,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-28 12:52:19,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:19,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:52:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:52:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:52:19,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:19,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-10-28 12:52:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:19,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:19,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:19,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:52:19,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:19,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:52:19,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:19,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:19,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:19,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:52:19,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:19,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 410 proven. 79 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2020-10-28 12:52:20,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171515770] [2020-10-28 12:52:20,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:52:20,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:52:20,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717647231] [2020-10-28 12:52:20,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:52:20,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:52:20,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:52:20,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:52:20,014 INFO L87 Difference]: Start difference. First operand 2801 states and 3136 transitions. Second operand 8 states. [2020-10-28 12:52:23,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:52:23,271 INFO L93 Difference]: Finished difference Result 6710 states and 7656 transitions. [2020-10-28 12:52:23,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:52:23,272 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 628 [2020-10-28 12:52:23,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:52:23,291 INFO L225 Difference]: With dead ends: 6710 [2020-10-28 12:52:23,291 INFO L226 Difference]: Without dead ends: 4097 [2020-10-28 12:52:23,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-28 12:52:23,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4097 states. [2020-10-28 12:52:23,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4097 to 4091. [2020-10-28 12:52:23,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4091 states. [2020-10-28 12:52:23,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4091 states to 4091 states and 4572 transitions. [2020-10-28 12:52:23,432 INFO L78 Accepts]: Start accepts. Automaton has 4091 states and 4572 transitions. Word has length 628 [2020-10-28 12:52:23,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:52:23,433 INFO L481 AbstractCegarLoop]: Abstraction has 4091 states and 4572 transitions. [2020-10-28 12:52:23,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:52:23,433 INFO L276 IsEmpty]: Start isEmpty. Operand 4091 states and 4572 transitions. [2020-10-28 12:52:23,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2020-10-28 12:52:23,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:52:23,442 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:52:23,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:52:23,443 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:52:23,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:52:23,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1129504087, now seen corresponding path program 1 times [2020-10-28 12:52:23,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:52:23,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033962185] [2020-10-28 12:52:23,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:52:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:23,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:23,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:24,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:24,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:28,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:28,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 692 [2020-10-28 12:52:28,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:52:28,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-28 12:52:28,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:28,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:28,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:52:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 410 [2020-10-28 12:52:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-28 12:52:28,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:28,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:52:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:28,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:28,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:28,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:52:28,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:28,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:52:28,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:28,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:28,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:28,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:52:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:28,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:28,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:28,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:52:28,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:28,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:52:28,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:28,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:28,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:28,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:52:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:28,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:28,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:28,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:52:28,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:28,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:52:28,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:28,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:28,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:28,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:28,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:28,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:28,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:52:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:29,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:29,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:29,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:52:29,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:29,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:52:29,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:29,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:52:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-28 12:52:29,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:29,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-28 12:52:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:29,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:29,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:29,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:52:29,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:29,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 12:52:29,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:29,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:52:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:52:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:52:29,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:29,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2020-10-28 12:52:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:29,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:29,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:29,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:52:29,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:29,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:52:29,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:29,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:52:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:29,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 454 proven. 79 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2020-10-28 12:52:29,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033962185] [2020-10-28 12:52:29,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:52:29,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:52:29,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661165841] [2020-10-28 12:52:29,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:52:29,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:52:29,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:52:29,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:52:29,851 INFO L87 Difference]: Start difference. First operand 4091 states and 4572 transitions. Second operand 7 states. [2020-10-28 12:52:31,780 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 12:52:32,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:52:32,101 INFO L93 Difference]: Finished difference Result 9096 states and 10345 transitions. [2020-10-28 12:52:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:52:32,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 672 [2020-10-28 12:52:32,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:52:32,126 INFO L225 Difference]: With dead ends: 9096 [2020-10-28 12:52:32,126 INFO L226 Difference]: Without dead ends: 5377 [2020-10-28 12:52:32,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:52:32,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5377 states. [2020-10-28 12:52:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5377 to 5191. [2020-10-28 12:52:32,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5191 states. [2020-10-28 12:52:32,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 5903 transitions. [2020-10-28 12:52:32,349 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 5903 transitions. Word has length 672 [2020-10-28 12:52:32,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:52:32,350 INFO L481 AbstractCegarLoop]: Abstraction has 5191 states and 5903 transitions. [2020-10-28 12:52:32,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:52:32,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 5903 transitions. [2020-10-28 12:52:32,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2020-10-28 12:52:32,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:52:32,362 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:52:32,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:52:32,362 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:52:32,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:52:32,363 INFO L82 PathProgramCache]: Analyzing trace with hash 346713284, now seen corresponding path program 1 times [2020-10-28 12:52:32,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:52:32,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726257391] [2020-10-28 12:52:32,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:52:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:32,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:34,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:35,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:36,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:37,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:37,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 770 [2020-10-28 12:52:37,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:52:37,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 12:52:37,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:37,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:37,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:52:37,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-28 12:52:37,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:52:37,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:37,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:52:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:37,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:37,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:37,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:52:37,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:37,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:52:37,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:37,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:37,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:37,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:52:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:37,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:37,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:37,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:52:37,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:37,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:52:37,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:37,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:37,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:37,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:52:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:37,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:37,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:37,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:52:37,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:37,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 12:52:37,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:37,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:52:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:52:37,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:37,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:52:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:37,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:38,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:38,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:52:38,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:38,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 12:52:38,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:38,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:38,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:52:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:52:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-28 12:52:38,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:38,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-28 12:52:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:38,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:38,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:38,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:52:38,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:38,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:52:38,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:38,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:38,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:38,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 12:52:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:38,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:38,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2020-10-28 12:52:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:38,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:38,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:38,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:52:38,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:38,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 12:52:38,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:38,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-28 12:52:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:38,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:38,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 659 [2020-10-28 12:52:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:38,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:38,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:38,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:52:38,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:38,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:52:38,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:38,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:38,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:38,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:52:38,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:38,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1478 backedges. 296 proven. 326 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2020-10-28 12:52:38,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726257391] [2020-10-28 12:52:38,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:52:38,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:52:38,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506138357] [2020-10-28 12:52:38,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:52:38,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:52:38,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:52:38,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:52:38,925 INFO L87 Difference]: Start difference. First operand 5191 states and 5903 transitions. Second operand 7 states. [2020-10-28 12:52:40,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:52:40,903 INFO L93 Difference]: Finished difference Result 10392 states and 11940 transitions. [2020-10-28 12:52:40,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:52:40,904 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 748 [2020-10-28 12:52:40,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:52:40,928 INFO L225 Difference]: With dead ends: 10392 [2020-10-28 12:52:40,929 INFO L226 Difference]: Without dead ends: 5573 [2020-10-28 12:52:40,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:52:40,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5573 states. [2020-10-28 12:52:41,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5573 to 5567. [2020-10-28 12:52:41,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5567 states. [2020-10-28 12:52:41,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5567 states to 5567 states and 6352 transitions. [2020-10-28 12:52:41,097 INFO L78 Accepts]: Start accepts. Automaton has 5567 states and 6352 transitions. Word has length 748 [2020-10-28 12:52:41,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:52:41,098 INFO L481 AbstractCegarLoop]: Abstraction has 5567 states and 6352 transitions. [2020-10-28 12:52:41,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:52:41,098 INFO L276 IsEmpty]: Start isEmpty. Operand 5567 states and 6352 transitions. [2020-10-28 12:52:41,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2020-10-28 12:52:41,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:52:41,109 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:52:41,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:52:41,109 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:52:41,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:52:41,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1038117644, now seen corresponding path program 1 times [2020-10-28 12:52:41,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:52:41,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442293106] [2020-10-28 12:52:41,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:52:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:41,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:41,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:42,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:46,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:46,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 793 [2020-10-28 12:52:46,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:52:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 12:52:46,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:46,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:52:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-28 12:52:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-28 12:52:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:46,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:52:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:46,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:46,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:46,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:52:46,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:46,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:52:46,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:46,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:46,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:46,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:46,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:46,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:46,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:52:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:46,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:46,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:46,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:52:46,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:46,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:52:46,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:46,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:46,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:46,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:52:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:46,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:46,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:46,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:52:46,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:46,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:52:46,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:46,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:46,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:46,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:46,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:46,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:46,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:52:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:46,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:46,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:46,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:52:46,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:46,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:52:46,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:46,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:46,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:46,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:46,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:46,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:46,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:52:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:46,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:46,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:46,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:52:46,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:46,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 12:52:46,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:46,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:46,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:52:46,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:46,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:52:46,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:46,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-28 12:52:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:46,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:46,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:46,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:52:46,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:46,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 12:52:46,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:46,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:52:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:52:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:52:46,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:47,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-28 12:52:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:47,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:47,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:47,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:52:47,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:47,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:52:47,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:47,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:47,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:47,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:52:47,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:47,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:47,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1613 backedges. 568 proven. 79 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2020-10-28 12:52:47,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442293106] [2020-10-28 12:52:47,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:52:47,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:52:47,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743829637] [2020-10-28 12:52:47,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:52:47,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:52:47,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:52:47,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:52:47,588 INFO L87 Difference]: Start difference. First operand 5567 states and 6352 transitions. Second operand 7 states. [2020-10-28 12:52:49,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:52:49,522 INFO L93 Difference]: Finished difference Result 11132 states and 12738 transitions. [2020-10-28 12:52:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:52:49,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 771 [2020-10-28 12:52:49,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:52:49,550 INFO L225 Difference]: With dead ends: 11132 [2020-10-28 12:52:49,550 INFO L226 Difference]: Without dead ends: 5937 [2020-10-28 12:52:49,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:52:49,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5937 states. [2020-10-28 12:52:49,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5937 to 5569. [2020-10-28 12:52:49,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5569 states. [2020-10-28 12:52:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5569 states to 5569 states and 6359 transitions. [2020-10-28 12:52:49,717 INFO L78 Accepts]: Start accepts. Automaton has 5569 states and 6359 transitions. Word has length 771 [2020-10-28 12:52:49,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:52:49,719 INFO L481 AbstractCegarLoop]: Abstraction has 5569 states and 6359 transitions. [2020-10-28 12:52:49,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:52:49,719 INFO L276 IsEmpty]: Start isEmpty. Operand 5569 states and 6359 transitions. [2020-10-28 12:52:49,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2020-10-28 12:52:49,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:52:49,732 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:52:49,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:52:49,732 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:52:49,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:52:49,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1395875673, now seen corresponding path program 1 times [2020-10-28 12:52:49,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:52:49,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223050826] [2020-10-28 12:52:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:52:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:49,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:50,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:50,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:51,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:54,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:54,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 871 [2020-10-28 12:52:54,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:52:54,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 12:52:54,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:54,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:54,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:52:54,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 770 [2020-10-28 12:52:54,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 12:52:54,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:55,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:52:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:55,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:55,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:55,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:52:55,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:55,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:52:55,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:55,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:55,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:55,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:52:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:55,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:55,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:55,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:52:55,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:55,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:52:55,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:55,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:55,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:55,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:55,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:55,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:55,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:52:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:55,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:55,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:55,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:52:55,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:55,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:52:55,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:55,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:55,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:55,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:52:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:55,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:55,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:55,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:52:55,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:55,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:52:55,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:55,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:55,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:55,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:52:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:55,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:55,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:55,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:52:55,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 12:52:55,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:55,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:55,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-28 12:52:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:55,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:55,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:55,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:52:55,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:55,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:52:55,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:55,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:55,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:52:55,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:55,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:52:55,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:55,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-28 12:52:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:55,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:55,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:55,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:52:55,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:55,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 12:52:55,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:55,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:52:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:52:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-28 12:52:55,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:55,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-10-28 12:52:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:55,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:55,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:52:55,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:52:55,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:52:55,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 12:52:55,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:52:55,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:52:55,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:52:55,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:52:55,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:52:55,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:52:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2078 backedges. 546 proven. 2 refuted. 0 times theorem prover too weak. 1530 trivial. 0 not checked. [2020-10-28 12:52:56,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223050826] [2020-10-28 12:52:56,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:52:56,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:52:56,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349791452] [2020-10-28 12:52:56,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:52:56,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:52:56,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:52:56,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:52:56,091 INFO L87 Difference]: Start difference. First operand 5569 states and 6359 transitions. Second operand 8 states. [2020-10-28 12:52:58,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:52:58,138 INFO L93 Difference]: Finished difference Result 11516 states and 13357 transitions. [2020-10-28 12:52:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:52:58,139 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 847 [2020-10-28 12:52:58,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:52:58,162 INFO L225 Difference]: With dead ends: 11516 [2020-10-28 12:52:58,163 INFO L226 Difference]: Without dead ends: 6319 [2020-10-28 12:52:58,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:52:58,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6319 states. [2020-10-28 12:52:58,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6319 to 5951. [2020-10-28 12:52:58,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5951 states. [2020-10-28 12:52:58,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5951 states to 5951 states and 6801 transitions. [2020-10-28 12:52:58,319 INFO L78 Accepts]: Start accepts. Automaton has 5951 states and 6801 transitions. Word has length 847 [2020-10-28 12:52:58,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:52:58,321 INFO L481 AbstractCegarLoop]: Abstraction has 5951 states and 6801 transitions. [2020-10-28 12:52:58,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:52:58,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5951 states and 6801 transitions. [2020-10-28 12:52:58,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 869 [2020-10-28 12:52:58,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:52:58,333 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:52:58,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:52:58,334 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:52:58,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:52:58,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2106370379, now seen corresponding path program 1 times [2020-10-28 12:52:58,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:52:58,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714108845] [2020-10-28 12:52:58,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:52:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:52:58,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:58,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:52:59,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:03,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:03,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 892 [2020-10-28 12:53:03,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:53:03,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 12:53:03,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:03,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:53:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-28 12:53:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:53:03,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:03,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:53:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:03,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:03,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:03,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:53:03,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:03,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:53:03,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:03,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:03,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:03,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:53:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:03,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:03,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:03,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:53:03,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:03,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:53:03,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:03,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:03,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:03,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:03,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:03,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:03,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:53:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:03,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:03,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:03,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:53:03,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:03,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:53:03,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:03,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:03,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:03,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:53:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:03,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:03,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:03,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:53:03,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:03,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 12:53:03,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:03,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:03,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:53:03,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:03,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:53:03,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:03,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:53:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:03,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:04,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:04,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:53:04,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:04,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 12:53:04,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:04,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:04,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:53:04,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:53:04,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-28 12:53:04,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:04,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-28 12:53:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:04,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:04,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:04,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:53:04,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:04,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:53:04,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:04,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 12:53:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:04,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:04,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-28 12:53:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:04,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:04,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:04,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:53:04,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:04,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:53:04,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:04,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:04,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:04,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-28 12:53:04,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:04,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:04,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2020-10-28 12:53:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:04,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:04,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:04,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:53:04,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:04,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:53:04,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:04,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 12:53:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:04,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2111 backedges. 436 proven. 329 refuted. 0 times theorem prover too weak. 1346 trivial. 0 not checked. [2020-10-28 12:53:04,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714108845] [2020-10-28 12:53:04,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:53:04,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:53:04,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594997732] [2020-10-28 12:53:04,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:53:04,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:53:04,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:53:04,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:53:04,890 INFO L87 Difference]: Start difference. First operand 5951 states and 6801 transitions. Second operand 7 states. [2020-10-28 12:53:07,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:53:07,083 INFO L93 Difference]: Finished difference Result 11544 states and 13245 transitions. [2020-10-28 12:53:07,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:53:07,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 868 [2020-10-28 12:53:07,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:53:07,105 INFO L225 Difference]: With dead ends: 11544 [2020-10-28 12:53:07,105 INFO L226 Difference]: Without dead ends: 5965 [2020-10-28 12:53:07,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:53:07,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5965 states. [2020-10-28 12:53:07,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5965 to 5773. [2020-10-28 12:53:07,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5773 states. [2020-10-28 12:53:07,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5773 states to 5773 states and 6406 transitions. [2020-10-28 12:53:07,239 INFO L78 Accepts]: Start accepts. Automaton has 5773 states and 6406 transitions. Word has length 868 [2020-10-28 12:53:07,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:53:07,240 INFO L481 AbstractCegarLoop]: Abstraction has 5773 states and 6406 transitions. [2020-10-28 12:53:07,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:53:07,240 INFO L276 IsEmpty]: Start isEmpty. Operand 5773 states and 6406 transitions. [2020-10-28 12:53:07,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2020-10-28 12:53:07,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:53:07,253 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:53:07,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:53:07,254 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:53:07,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:53:07,254 INFO L82 PathProgramCache]: Analyzing trace with hash 538991164, now seen corresponding path program 1 times [2020-10-28 12:53:07,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:53:07,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168108713] [2020-10-28 12:53:07,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:53:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:07,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:08,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:08,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 975 [2020-10-28 12:53:08,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:08,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 992 [2020-10-28 12:53:08,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:08,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:08,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:53:08,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-28 12:53:08,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:53:08,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:08,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:53:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:08,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:08,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:08,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:53:08,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:08,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:53:08,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:08,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:08,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:08,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:53:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:08,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:08,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:08,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:53:08,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:08,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:53:08,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:08,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:08,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:08,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:08,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:08,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:08,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:53:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:08,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:08,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:08,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:53:08,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 12:53:08,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:08,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:08,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:08,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:53:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:08,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:08,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:08,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:53:08,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:08,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:53:08,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:08,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:08,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:08,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:08,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:08,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:08,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:53:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:08,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:08,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:08,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:53:08,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:08,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:53:08,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:08,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:08,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:08,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:08,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:08,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:08,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:53:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:08,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:09,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:09,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:53:09,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:09,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 12:53:09,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:09,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:09,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:09,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:09,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:09,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:09,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:53:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:09,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:09,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:09,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:53:09,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:09,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:53:09,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:09,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:09,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:09,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:53:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:09,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:09,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:09,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:53:09,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:09,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 12:53:09,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:09,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:09,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:53:09,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-28 12:53:09,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:09,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:53:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:09,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:09,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:09,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:53:09,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:09,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 12:53:09,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:09,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:09,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:53:09,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:53:09,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:53:09,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:10,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2682 backedges. 653 proven. 2 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2020-10-28 12:53:10,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168108713] [2020-10-28 12:53:10,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:53:10,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:53:10,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111512054] [2020-10-28 12:53:10,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:53:10,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:53:10,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:53:10,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:53:10,142 INFO L87 Difference]: Start difference. First operand 5773 states and 6406 transitions. Second operand 8 states. [2020-10-28 12:53:12,582 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:53:12,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:53:12,949 INFO L93 Difference]: Finished difference Result 11352 states and 12640 transitions. [2020-10-28 12:53:12,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:53:12,953 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 949 [2020-10-28 12:53:12,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:53:12,969 INFO L225 Difference]: With dead ends: 11352 [2020-10-28 12:53:12,969 INFO L226 Difference]: Without dead ends: 5951 [2020-10-28 12:53:12,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:53:12,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5951 states. [2020-10-28 12:53:13,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5951 to 5947. [2020-10-28 12:53:13,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5947 states. [2020-10-28 12:53:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5947 states to 5947 states and 6535 transitions. [2020-10-28 12:53:13,099 INFO L78 Accepts]: Start accepts. Automaton has 5947 states and 6535 transitions. Word has length 949 [2020-10-28 12:53:13,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:53:13,100 INFO L481 AbstractCegarLoop]: Abstraction has 5947 states and 6535 transitions. [2020-10-28 12:53:13,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:53:13,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5947 states and 6535 transitions. [2020-10-28 12:53:13,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2020-10-28 12:53:13,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:53:13,113 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:53:13,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:53:13,113 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:53:13,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:53:13,114 INFO L82 PathProgramCache]: Analyzing trace with hash 923032424, now seen corresponding path program 1 times [2020-10-28 12:53:13,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:53:13,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106667333] [2020-10-28 12:53:13,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:53:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:13,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:14,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:18,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:18,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 978 [2020-10-28 12:53:18,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:53:18,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-28 12:53:18,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:18,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:53:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 959 [2020-10-28 12:53:18,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 12:53:18,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:18,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:53:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:18,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:18,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:18,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:53:18,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:18,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:53:18,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:18,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:18,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:18,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:53:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:18,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:18,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:53:18,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:18,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:53:18,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:18,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:18,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:18,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:53:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:18,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:18,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:18,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:53:18,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:18,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:53:18,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:18,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:18,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:18,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:18,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:18,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:18,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:53:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:18,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:18,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:53:18,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:18,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:53:18,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:18,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:18,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:18,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:18,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:18,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:53:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:18,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:18,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:18,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:53:18,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:18,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:53:18,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:18,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:18,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:18,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:18,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:53:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:18,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:18,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:18,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:53:18,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:18,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:53:18,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:18,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:18,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:18,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:18,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:18,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:18,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:53:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:18,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:18,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:18,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:53:18,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:18,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:53:18,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:18,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:18,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:18,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:18,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:18,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:18,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:53:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:18,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:18,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:18,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:53:18,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:18,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 12:53:18,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:18,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:18,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:18,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:18,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:18,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:19,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:53:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:19,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:19,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:19,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:53:19,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:19,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 12:53:19,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:19,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:53:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:53:19,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2697 backedges. 85 proven. 8 refuted. 0 times theorem prover too weak. 2604 trivial. 0 not checked. [2020-10-28 12:53:19,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106667333] [2020-10-28 12:53:19,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:53:19,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:53:19,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826163698] [2020-10-28 12:53:19,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:53:19,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:53:19,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:53:19,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:53:19,623 INFO L87 Difference]: Start difference. First operand 5947 states and 6535 transitions. Second operand 6 states. [2020-10-28 12:53:22,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:53:22,025 INFO L93 Difference]: Finished difference Result 7046 states and 7857 transitions. [2020-10-28 12:53:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:53:22,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 952 [2020-10-28 12:53:22,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:53:22,047 INFO L225 Difference]: With dead ends: 7046 [2020-10-28 12:53:22,047 INFO L226 Difference]: Without dead ends: 7043 [2020-10-28 12:53:22,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:53:22,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7043 states. [2020-10-28 12:53:22,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7043 to 5763. [2020-10-28 12:53:22,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5763 states. [2020-10-28 12:53:22,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5763 states to 5763 states and 6311 transitions. [2020-10-28 12:53:22,171 INFO L78 Accepts]: Start accepts. Automaton has 5763 states and 6311 transitions. Word has length 952 [2020-10-28 12:53:22,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:53:22,172 INFO L481 AbstractCegarLoop]: Abstraction has 5763 states and 6311 transitions. [2020-10-28 12:53:22,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:53:22,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5763 states and 6311 transitions. [2020-10-28 12:53:22,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1036 [2020-10-28 12:53:22,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:53:22,188 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:53:22,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:53:22,189 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:53:22,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:53:22,189 INFO L82 PathProgramCache]: Analyzing trace with hash -932974781, now seen corresponding path program 1 times [2020-10-28 12:53:22,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:53:22,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473242791] [2020-10-28 12:53:22,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:53:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:22,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:22,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:27,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:27,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1063 [2020-10-28 12:53:27,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:53:27,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 12:53:27,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:27,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:27,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:53:27,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-28 12:53:27,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-28 12:53:27,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:27,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:53:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:27,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:27,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:27,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:53:27,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:27,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:53:27,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:27,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:27,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:27,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:27,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:27,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:27,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:53:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:27,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:27,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:27,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:53:27,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:27,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:53:27,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:27,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:27,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:27,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:53:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:27,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:27,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:27,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:53:27,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:27,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:53:27,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:27,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:27,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:27,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:27,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:27,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:27,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:53:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:27,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:27,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:27,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:53:27,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:27,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:53:27,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:27,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:27,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:27,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:53:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:27,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:27,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:27,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:53:27,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:27,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:53:27,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:27,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:27,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:27,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:53:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:27,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:27,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:53:27,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:27,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:53:27,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:27,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:27,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:27,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:53:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:27,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:27,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:27,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:53:27,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:27,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:53:27,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:27,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:53:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:53:27,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:27,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:53:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:28,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:28,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:28,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:53:28,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:28,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-28 12:53:28,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:28,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:28,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:53:28,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:53:28,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:53:28,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:28,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:53:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:28,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:28,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:28,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:53:28,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:28,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 12:53:28,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:28,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:28,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:53:28,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:53:28,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:53:28,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:28,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 943 [2020-10-28 12:53:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:28,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:28,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:28,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:53:28,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:28,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:53:28,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:28,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:28,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 12:53:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:29,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3361 backedges. 1283 proven. 164 refuted. 0 times theorem prover too weak. 1914 trivial. 0 not checked. [2020-10-28 12:53:29,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473242791] [2020-10-28 12:53:29,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:53:29,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 12:53:29,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983097797] [2020-10-28 12:53:29,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 12:53:29,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:53:29,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 12:53:29,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 12:53:29,304 INFO L87 Difference]: Start difference. First operand 5763 states and 6311 transitions. Second operand 9 states. [2020-10-28 12:53:33,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:53:33,081 INFO L93 Difference]: Finished difference Result 12824 states and 14180 transitions. [2020-10-28 12:53:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 12:53:33,082 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1035 [2020-10-28 12:53:33,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:53:33,104 INFO L225 Difference]: With dead ends: 12824 [2020-10-28 12:53:33,104 INFO L226 Difference]: Without dead ends: 7433 [2020-10-28 12:53:33,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-28 12:53:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7433 states. [2020-10-28 12:53:33,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7433 to 6875. [2020-10-28 12:53:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6875 states. [2020-10-28 12:53:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6875 states to 6875 states and 7622 transitions. [2020-10-28 12:53:33,263 INFO L78 Accepts]: Start accepts. Automaton has 6875 states and 7622 transitions. Word has length 1035 [2020-10-28 12:53:33,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:53:33,264 INFO L481 AbstractCegarLoop]: Abstraction has 6875 states and 7622 transitions. [2020-10-28 12:53:33,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 12:53:33,264 INFO L276 IsEmpty]: Start isEmpty. Operand 6875 states and 7622 transitions. [2020-10-28 12:53:33,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2020-10-28 12:53:33,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:53:33,280 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:53:33,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:53:33,281 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:53:33,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:53:33,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1011334915, now seen corresponding path program 1 times [2020-10-28 12:53:33,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:53:33,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222663977] [2020-10-28 12:53:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:53:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:33,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:37,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:37,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1095 [2020-10-28 12:53:37,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:53:37,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4304 [2020-10-28 12:53:37,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:37,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:37,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:53:37,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 991 [2020-10-28 12:53:37,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:53:37,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:37,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:53:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:37,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:37,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:37,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:53:37,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:37,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:53:37,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:37,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:37,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:37,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:37,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:37,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:53:37,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:53:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:37,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:38,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:38,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:53:38,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:38,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:53:38,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:38,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:38,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:38,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:53:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:38,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:38,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:38,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:53:38,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:38,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:53:38,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:38,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:38,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:38,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:38,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:38,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:38,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:53:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:38,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:38,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:38,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:53:38,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:38,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:53:38,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:38,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:38,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:38,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:53:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:38,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:38,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:38,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:53:38,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:38,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:53:38,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:38,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:38,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:38,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:53:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:38,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:38,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:38,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:53:38,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:38,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:53:38,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:38,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:38,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:38,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:38,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:38,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:53:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:38,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:38,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:38,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:53:38,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:38,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:53:38,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:38,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:38,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:38,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:38,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:38,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:38,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:53:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:38,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:38,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:38,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:53:38,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:38,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:53:38,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:38,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:38,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:38,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:53:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:38,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:38,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:38,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:53:38,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:38,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 12:53:38,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:38,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:53:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:53:38,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:38,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:53:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:38,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:38,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:38,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:53:38,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:38,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 12:53:38,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:38,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:53:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:53:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:53:38,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:53:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3503 backedges. 747 proven. 2 refuted. 0 times theorem prover too weak. 2754 trivial. 0 not checked. [2020-10-28 12:53:39,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222663977] [2020-10-28 12:53:39,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:53:39,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:53:39,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91813086] [2020-10-28 12:53:39,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:53:39,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:53:39,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:53:39,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:53:39,746 INFO L87 Difference]: Start difference. First operand 6875 states and 7622 transitions. Second operand 7 states. [2020-10-28 12:53:42,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:53:42,109 INFO L93 Difference]: Finished difference Result 13396 states and 14891 transitions. [2020-10-28 12:53:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:53:42,110 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1067 [2020-10-28 12:53:42,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:53:42,145 INFO L225 Difference]: With dead ends: 13396 [2020-10-28 12:53:42,145 INFO L226 Difference]: Without dead ends: 6893 [2020-10-28 12:53:42,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:53:42,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2020-10-28 12:53:42,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6875. [2020-10-28 12:53:42,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6875 states. [2020-10-28 12:53:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6875 states to 6875 states and 7610 transitions. [2020-10-28 12:53:42,313 INFO L78 Accepts]: Start accepts. Automaton has 6875 states and 7610 transitions. Word has length 1067 [2020-10-28 12:53:42,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:53:42,314 INFO L481 AbstractCegarLoop]: Abstraction has 6875 states and 7610 transitions. [2020-10-28 12:53:42,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:53:42,315 INFO L276 IsEmpty]: Start isEmpty. Operand 6875 states and 7610 transitions. [2020-10-28 12:53:42,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1272 [2020-10-28 12:53:42,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:53:42,336 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:53:42,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:53:42,336 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:53:42,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:53:42,337 INFO L82 PathProgramCache]: Analyzing trace with hash 2100279262, now seen corresponding path program 1 times [2020-10-28 12:53:42,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:53:42,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162443378] [2020-10-28 12:53:42,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:53:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:42,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:42,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:46,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:47,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:47,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:47,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1301 [2020-10-28 12:53:47,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:53:47,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 12:53:47,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:47,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:47,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:53:47,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1013 [2020-10-28 12:53:47,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-28 12:53:47,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:47,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:53:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:47,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:47,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:47,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:53:47,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:47,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:53:47,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:47,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:47,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:47,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:53:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:47,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:47,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:47,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:53:47,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:47,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:53:47,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:47,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:47,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:47,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:53:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:47,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:47,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:47,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:53:47,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:47,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:53:47,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:47,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:47,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:47,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:47,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:47,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:47,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:53:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:47,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:47,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:47,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:53:47,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:47,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:53:47,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:47,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:47,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:47,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:47,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:47,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:53:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:47,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:47,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:47,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:53:47,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:47,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:53:47,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:47,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:47,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:47,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:47,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:47,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:47,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:53:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:47,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:47,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:53:47,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:47,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:53:47,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:47,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:47,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:53:48,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:53:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:48,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:48,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:48,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:53:48,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:48,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:53:48,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:48,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:48,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:48,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:48,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:48,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:48,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:53:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:48,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:48,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:48,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:53:48,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:48,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 12:53:48,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:48,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:48,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:48,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:53:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:48,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:48,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:53:48,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:48,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 12:53:48,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:48,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:48,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:53:48,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:48,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 12:53:48,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:48,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 997 [2020-10-28 12:53:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:48,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:48,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:48,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:53:48,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:48,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-28 12:53:48,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:48,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:48,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:53:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:53:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 12:53:48,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:53:48,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1179 [2020-10-28 12:53:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:48,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:48,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:48,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:53:48,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:48,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 12:53:48,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:48,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:48,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:53:48,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:53:48,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:53:48,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4628 backedges. 1735 proven. 82 refuted. 0 times theorem prover too weak. 2811 trivial. 0 not checked. [2020-10-28 12:53:50,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162443378] [2020-10-28 12:53:50,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:53:50,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:53:50,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892314658] [2020-10-28 12:53:50,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:53:50,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:53:50,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:53:50,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:53:50,458 INFO L87 Difference]: Start difference. First operand 6875 states and 7610 transitions. Second operand 8 states. [2020-10-28 12:53:53,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:53:53,457 INFO L93 Difference]: Finished difference Result 13396 states and 14867 transitions. [2020-10-28 12:53:53,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:53:53,458 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1271 [2020-10-28 12:53:53,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:53:53,475 INFO L225 Difference]: With dead ends: 13396 [2020-10-28 12:53:53,475 INFO L226 Difference]: Without dead ends: 6893 [2020-10-28 12:53:53,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:53:53,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2020-10-28 12:53:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6873. [2020-10-28 12:53:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6873 states. [2020-10-28 12:53:53,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6873 states to 6873 states and 7586 transitions. [2020-10-28 12:53:53,631 INFO L78 Accepts]: Start accepts. Automaton has 6873 states and 7586 transitions. Word has length 1271 [2020-10-28 12:53:53,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:53:53,633 INFO L481 AbstractCegarLoop]: Abstraction has 6873 states and 7586 transitions. [2020-10-28 12:53:53,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:53:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 6873 states and 7586 transitions. [2020-10-28 12:53:53,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1536 [2020-10-28 12:53:53,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:53:53,666 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:53:53,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:53:53,666 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:53:53,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:53:53,667 INFO L82 PathProgramCache]: Analyzing trace with hash 170280948, now seen corresponding path program 1 times [2020-10-28 12:53:53,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:53:53,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433055995] [2020-10-28 12:53:53,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:53:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:54,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:54,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:55,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:59,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:59,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1569 [2020-10-28 12:53:59,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:53:59,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-28 12:53:59,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:59,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:59,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:53:59,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-28 12:53:59,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 12:53:59,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:59,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:53:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:59,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:59,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:59,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:53:59,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:59,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:53:59,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:59,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:59,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:59,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:53:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:59,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:59,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:53:59,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:59,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:53:59,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:59,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:59,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:53:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:59,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:59,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:59,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:53:59,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:59,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:53:59,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:59,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:59,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:59,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:53:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:59,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:59,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:59,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:53:59,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:59,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:53:59,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:59,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:59,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:59,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:53:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:59,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:59,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:59,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:53:59,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:59,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:53:59,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:59,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:59,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:59,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:59,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:59,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:59,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:53:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:59,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:59,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:59,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:53:59,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:59,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:53:59,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:59,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:59,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:59,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:59,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:59,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:59,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:53:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:59,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:59,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:59,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:53:59,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:59,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:53:59,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:59,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:59,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:53:59,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:59,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:53:59,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:59,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:53:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:59,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:53:59,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:53:59,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:53:59,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:53:59,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 12:53:59,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:53:59,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:53:59,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:53:59,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:53:59,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-28 12:53:59,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:53:59,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:53:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:53:59,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:00,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:00,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:54:00,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:00,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-28 12:54:00,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:00,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:54:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:54:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 12:54:00,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:00,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 997 [2020-10-28 12:54:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:00,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:00,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:00,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:54:00,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:00,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 12:54:00,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:00,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:00,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-28 12:54:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:00,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:00,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1179 [2020-10-28 12:54:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:00,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:00,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:00,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 12:54:00,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:00,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 12:54:00,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:00,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-28 12:54:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:00,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:00,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1357 [2020-10-28 12:54:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:00,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:00,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:00,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:54:00,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:00,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:54:00,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:00,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:00,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 12:54:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:00,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1443 [2020-10-28 12:54:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:00,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:00,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:00,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:54:00,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:00,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:54:00,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:00,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:00,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:00,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 12:54:00,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:00,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6823 backedges. 1002 proven. 439 refuted. 0 times theorem prover too weak. 5382 trivial. 0 not checked. [2020-10-28 12:54:01,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433055995] [2020-10-28 12:54:01,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:54:01,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:54:01,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189774078] [2020-10-28 12:54:01,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:54:01,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:54:01,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:54:01,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:54:01,889 INFO L87 Difference]: Start difference. First operand 6873 states and 7586 transitions. Second operand 7 states. [2020-10-28 12:54:04,128 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:54:04,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:54:04,177 INFO L93 Difference]: Finished difference Result 13382 states and 14805 transitions. [2020-10-28 12:54:04,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:54:04,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1535 [2020-10-28 12:54:04,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:54:04,193 INFO L225 Difference]: With dead ends: 13382 [2020-10-28 12:54:04,193 INFO L226 Difference]: Without dead ends: 6881 [2020-10-28 12:54:04,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:54:04,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6881 states. [2020-10-28 12:54:04,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6881 to 6871. [2020-10-28 12:54:04,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6871 states. [2020-10-28 12:54:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6871 states to 6871 states and 7498 transitions. [2020-10-28 12:54:04,340 INFO L78 Accepts]: Start accepts. Automaton has 6871 states and 7498 transitions. Word has length 1535 [2020-10-28 12:54:04,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:54:04,341 INFO L481 AbstractCegarLoop]: Abstraction has 6871 states and 7498 transitions. [2020-10-28 12:54:04,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:54:04,342 INFO L276 IsEmpty]: Start isEmpty. Operand 6871 states and 7498 transitions. [2020-10-28 12:54:04,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1654 [2020-10-28 12:54:04,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:54:04,377 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:54:04,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:54:04,377 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:54:04,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:54:04,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1233528827, now seen corresponding path program 1 times [2020-10-28 12:54:04,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:54:04,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67209582] [2020-10-28 12:54:04,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:54:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:04,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:06,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:08,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:09,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:09,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1689 [2020-10-28 12:54:09,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:54:09,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5222 [2020-10-28 12:54:09,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:09,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:09,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:54:09,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1497 [2020-10-28 12:54:09,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 12:54:09,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:10,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:54:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:10,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:10,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:10,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:54:10,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:10,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:54:10,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:10,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:10,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:10,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:54:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:10,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:10,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:10,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:54:10,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:10,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:54:10,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:10,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:10,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:10,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:54:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:10,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:10,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:10,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:54:10,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:10,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:54:10,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:10,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:10,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:10,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:10,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:10,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:10,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:54:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:10,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:10,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:10,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:54:10,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:10,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:54:10,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:10,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:10,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:10,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:54:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:10,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:10,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:10,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:54:10,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:10,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:54:10,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:10,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:10,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:10,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:10,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:54:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:10,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:10,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:10,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:54:10,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:10,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:54:10,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:10,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:10,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:10,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:54:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:10,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:10,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:54:10,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:10,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:54:10,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:10,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:10,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:10,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:10,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:10,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:10,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:54:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:10,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:10,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:10,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:54:10,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:10,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:54:10,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:10,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:10,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:10,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:10,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:10,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:10,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:54:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:10,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:10,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:10,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:54:10,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:10,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:54:10,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:10,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:10,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:10,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:10,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:54:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:10,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:10,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:10,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:54:10,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:10,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:54:10,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:10,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:10,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:10,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:10,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:10,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:10,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 12:54:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:10,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:10,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:10,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:54:10,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:10,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:54:10,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:10,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:10,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:10,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:10,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:10,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:10,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 12:54:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:10,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:11,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:11,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 12:54:11,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:11,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 12:54:11,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:11,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:11,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:54:11,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-28 12:54:11,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:11,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1475 [2020-10-28 12:54:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:11,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:11,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:11,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:54:11,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:11,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 12:54:11,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:11,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:11,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:54:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:54:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:54:11,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:11,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1561 [2020-10-28 12:54:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:11,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:11,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:11,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:54:11,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:11,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:54:11,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:11,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:11,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:11,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 12:54:11,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:11,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:13,130 INFO L134 CoverageAnalysis]: Checked inductivity of 8084 backedges. 1109 proven. 82 refuted. 0 times theorem prover too weak. 6893 trivial. 0 not checked. [2020-10-28 12:54:13,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67209582] [2020-10-28 12:54:13,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:54:13,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:54:13,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335114915] [2020-10-28 12:54:13,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:54:13,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:54:13,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:54:13,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:54:13,133 INFO L87 Difference]: Start difference. First operand 6871 states and 7498 transitions. Second operand 8 states. [2020-10-28 12:54:16,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:54:16,362 INFO L93 Difference]: Finished difference Result 14690 states and 16213 transitions. [2020-10-28 12:54:16,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:54:16,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1653 [2020-10-28 12:54:16,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:54:16,381 INFO L225 Difference]: With dead ends: 14690 [2020-10-28 12:54:16,381 INFO L226 Difference]: Without dead ends: 6711 [2020-10-28 12:54:16,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:54:16,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6711 states. [2020-10-28 12:54:16,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6711 to 6123. [2020-10-28 12:54:16,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6123 states. [2020-10-28 12:54:16,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 6453 transitions. [2020-10-28 12:54:16,546 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 6453 transitions. Word has length 1653 [2020-10-28 12:54:16,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:54:16,548 INFO L481 AbstractCegarLoop]: Abstraction has 6123 states and 6453 transitions. [2020-10-28 12:54:16,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:54:16,548 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 6453 transitions. [2020-10-28 12:54:16,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1685 [2020-10-28 12:54:16,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:54:16,581 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:54:16,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:54:16,582 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:54:16,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:54:16,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1575557007, now seen corresponding path program 1 times [2020-10-28 12:54:16,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:54:16,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103393238] [2020-10-28 12:54:16,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:54:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:17,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:17,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:20,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:21,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:21,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:21,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1720 [2020-10-28 12:54:21,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:54:21,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 12:54:21,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:21,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:54:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1432 [2020-10-28 12:54:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-28 12:54:21,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:22,224 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-10-28 12:54:22,337 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 12:54:22,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:54:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:22,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:22,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:22,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:54:22,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:22,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:54:22,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:22,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:22,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:22,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:54:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:22,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:22,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:22,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:54:22,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:22,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:54:22,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:22,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:22,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:22,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:54:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:22,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:22,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:22,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:54:22,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:22,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:54:22,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:22,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:22,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:22,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:54:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:22,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:22,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:22,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:54:22,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:22,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:54:22,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:22,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:22,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:22,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:54:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:22,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:22,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:22,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:54:22,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:22,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:54:22,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:22,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:22,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:22,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:22,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:54:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:22,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:22,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:22,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:54:22,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:22,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:54:22,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:22,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:22,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:22,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:22,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:22,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:22,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:54:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:22,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:22,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:22,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:54:22,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:22,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:54:22,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:22,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:22,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:22,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:54:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:22,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:22,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:22,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:54:22,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:22,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:54:22,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:22,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:22,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:54:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:22,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:22,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:22,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:54:22,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:22,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:54:22,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:22,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:22,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:22,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:54:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:22,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:22,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:22,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:54:22,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:22,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:54:22,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:22,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:22,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 12:54:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:22,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:22,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:22,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:54:22,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:22,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:54:22,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:22,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:22,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:22,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:22,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:22,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:22,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 12:54:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:22,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:23,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:23,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:54:23,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:23,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 12:54:23,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:23,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:23,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:54:23,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:23,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:54:23,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:23,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2020-10-28 12:54:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:23,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:23,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:23,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:23,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:54:23,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:54:23,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-28 12:54:23,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:23,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:23,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:54:23,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:54:23,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 12:54:23,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:23,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1592 [2020-10-28 12:54:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:23,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:23,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:23,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:54:23,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:23,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 12:54:23,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:23,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:23,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:54:23,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:54:23,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:54:23,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8325 backedges. 2427 proven. 6 refuted. 0 times theorem prover too weak. 5892 trivial. 0 not checked. [2020-10-28 12:54:25,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103393238] [2020-10-28 12:54:25,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:54:25,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:54:25,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765347559] [2020-10-28 12:54:25,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:54:25,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:54:25,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:54:25,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:54:25,206 INFO L87 Difference]: Start difference. First operand 6123 states and 6453 transitions. Second operand 7 states. [2020-10-28 12:54:28,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:54:28,162 INFO L93 Difference]: Finished difference Result 12064 states and 12731 transitions. [2020-10-28 12:54:28,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:54:28,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1684 [2020-10-28 12:54:28,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:54:28,177 INFO L225 Difference]: With dead ends: 12064 [2020-10-28 12:54:28,177 INFO L226 Difference]: Without dead ends: 6313 [2020-10-28 12:54:28,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:54:28,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6313 states. [2020-10-28 12:54:28,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6313 to 6305. [2020-10-28 12:54:28,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6305 states. [2020-10-28 12:54:28,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6305 states to 6305 states and 6629 transitions. [2020-10-28 12:54:28,307 INFO L78 Accepts]: Start accepts. Automaton has 6305 states and 6629 transitions. Word has length 1684 [2020-10-28 12:54:28,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:54:28,309 INFO L481 AbstractCegarLoop]: Abstraction has 6305 states and 6629 transitions. [2020-10-28 12:54:28,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:54:28,309 INFO L276 IsEmpty]: Start isEmpty. Operand 6305 states and 6629 transitions. [2020-10-28 12:54:28,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1716 [2020-10-28 12:54:28,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:54:28,345 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:54:28,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:54:28,345 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:54:28,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:54:28,346 INFO L82 PathProgramCache]: Analyzing trace with hash 125055920, now seen corresponding path program 1 times [2020-10-28 12:54:28,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:54:28,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677010819] [2020-10-28 12:54:28,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:54:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:28,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:30,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:30,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:33,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:33,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1753 [2020-10-28 12:54:33,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:54:33,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 12:54:33,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:33,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:33,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:54:33,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1561 [2020-10-28 12:54:33,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 12:54:33,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:33,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:54:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:33,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:33,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:33,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:54:33,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:33,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:54:33,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:33,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:33,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:34,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:54:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:34,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:34,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:34,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:54:34,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:34,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:54:34,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:34,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:34,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:34,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:34,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:34,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:34,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:54:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:34,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:34,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:34,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:54:34,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:54:34,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:34,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:34,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:54:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:34,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:34,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:34,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:54:34,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:34,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:54:34,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:34,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:34,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:34,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:34,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:34,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:34,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:54:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:34,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:34,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:34,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:54:34,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:34,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:54:34,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:34,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:34,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:34,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:34,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:34,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:54:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:34,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:34,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:34,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:54:34,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:34,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 12:54:34,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:34,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:34,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:34,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:54:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:34,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:34,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:34,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:54:34,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:34,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:54:34,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:34,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:34,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:34,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:54:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:34,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:34,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:34,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:54:34,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:34,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 12:54:34,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:34,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:34,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:34,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:34,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:34,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:34,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:54:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:34,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:34,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:34,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:54:34,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:34,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:54:34,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:34,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:34,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:34,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:54:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:34,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:34,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:34,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:54:34,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:34,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:54:34,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:34,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:34,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:34,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 12:54:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:34,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:34,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:34,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:54:34,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:34,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:54:34,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:34,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:34,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:34,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:34,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:34,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:34,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 12:54:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:34,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:34,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:34,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:54:34,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:34,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:54:34,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:34,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:34,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:34,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2020-10-28 12:54:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:34,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:34,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:34,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 12:54:34,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:34,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 12:54:34,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:34,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:34,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:54:34,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:34,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:54:34,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:35,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1537 [2020-10-28 12:54:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:35,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:35,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:35,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:54:35,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:35,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 12:54:35,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:35,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:54:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:54:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:54:35,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:35,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1623 [2020-10-28 12:54:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:35,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:35,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:35,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:54:35,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:35,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:54:35,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:35,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 12:54:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:35,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:36,856 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 1210 proven. 82 refuted. 0 times theorem prover too weak. 7972 trivial. 0 not checked. [2020-10-28 12:54:36,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677010819] [2020-10-28 12:54:36,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:54:36,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:54:36,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233523232] [2020-10-28 12:54:36,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:54:36,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:54:36,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:54:36,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:54:36,858 INFO L87 Difference]: Start difference. First operand 6305 states and 6629 transitions. Second operand 7 states. [2020-10-28 12:54:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:54:39,220 INFO L93 Difference]: Finished difference Result 12246 states and 12889 transitions. [2020-10-28 12:54:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:54:39,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1715 [2020-10-28 12:54:39,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:54:39,240 INFO L225 Difference]: With dead ends: 12246 [2020-10-28 12:54:39,241 INFO L226 Difference]: Without dead ends: 6313 [2020-10-28 12:54:39,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:54:39,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6313 states. [2020-10-28 12:54:39,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6313 to 6307. [2020-10-28 12:54:39,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6307 states. [2020-10-28 12:54:39,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6307 states to 6307 states and 6604 transitions. [2020-10-28 12:54:39,390 INFO L78 Accepts]: Start accepts. Automaton has 6307 states and 6604 transitions. Word has length 1715 [2020-10-28 12:54:39,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:54:39,392 INFO L481 AbstractCegarLoop]: Abstraction has 6307 states and 6604 transitions. [2020-10-28 12:54:39,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:54:39,392 INFO L276 IsEmpty]: Start isEmpty. Operand 6307 states and 6604 transitions. [2020-10-28 12:54:39,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1766 [2020-10-28 12:54:39,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:54:39,429 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:54:39,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:54:39,430 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:54:39,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:54:39,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1755823492, now seen corresponding path program 1 times [2020-10-28 12:54:39,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:54:39,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533520378] [2020-10-28 12:54:39,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:54:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:39,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:40,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:41,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:43,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:44,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:44,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1803 [2020-10-28 12:54:44,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:54:44,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-28 12:54:44,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:44,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:44,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:54:44,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1430 [2020-10-28 12:54:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-28 12:54:44,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:45,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:54:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:45,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:45,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:45,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:54:45,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:45,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:54:45,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:45,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:45,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:45,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:54:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:45,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:45,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:45,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:54:45,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:54:45,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:45,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:45,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:45,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:45,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:45,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:45,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:54:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:45,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:45,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:54:45,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:45,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:54:45,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:45,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:45,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:45,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:45,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:45,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:45,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:54:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:45,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:45,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:45,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:54:45,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:45,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:54:45,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:45,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:45,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:45,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:45,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:45,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:54:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:45,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:45,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:45,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:54:45,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:45,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:54:45,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:45,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:45,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:45,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:45,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:45,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:45,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:54:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:45,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:45,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:45,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:54:45,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:45,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 12:54:45,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:45,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:45,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:45,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:54:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:45,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:45,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:45,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:54:45,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:45,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-28 12:54:45,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:45,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:45,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:45,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:45,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:45,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:45,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:54:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:45,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:45,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:54:45,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:45,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:54:45,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:45,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:45,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:45,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:45,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:45,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:45,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:54:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:45,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:45,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:45,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:54:45,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:45,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:54:45,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:45,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:45,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:45,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:45,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:45,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:45,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:54:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:45,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:45,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:45,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:54:45,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:45,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:54:45,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:45,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:45,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:45,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:45,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:45,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:46,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 12:54:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:46,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:46,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:46,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:54:46,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:46,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:54:46,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:46,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:46,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:46,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:46,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:46,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 12:54:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:46,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:46,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 12:54:46,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:46,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 12:54:46,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:46,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:54:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:54:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:54:46,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:46,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1408 [2020-10-28 12:54:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:46,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:46,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:54:46,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:46,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-28 12:54:46,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:46,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:46,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:54:46,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:54:46,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:54:46,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:46,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1587 [2020-10-28 12:54:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:46,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:46,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:46,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:54:46,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:46,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:54:46,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:46,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 12:54:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:46,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:46,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1673 [2020-10-28 12:54:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:46,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:46,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:54:46,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:54:46,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:54:46,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:54:46,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:54:46,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:54:46,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:54:46,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 12:54:46,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:54:46,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:54:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9417 backedges. 1628 proven. 165 refuted. 0 times theorem prover too weak. 7624 trivial. 0 not checked. [2020-10-28 12:54:48,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533520378] [2020-10-28 12:54:48,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:54:48,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:54:48,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000347287] [2020-10-28 12:54:48,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:54:48,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:54:48,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:54:48,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:54:48,738 INFO L87 Difference]: Start difference. First operand 6307 states and 6604 transitions. Second operand 8 states. [2020-10-28 12:54:52,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:54:52,961 INFO L93 Difference]: Finished difference Result 12422 states and 13025 transitions. [2020-10-28 12:54:52,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 12:54:52,962 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1765 [2020-10-28 12:54:52,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:54:52,973 INFO L225 Difference]: With dead ends: 12422 [2020-10-28 12:54:52,973 INFO L226 Difference]: Without dead ends: 5003 [2020-10-28 12:54:52,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:54:52,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5003 states. [2020-10-28 12:54:53,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5003 to 4811. [2020-10-28 12:54:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4811 states. [2020-10-28 12:54:53,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4811 states to 4811 states and 4952 transitions. [2020-10-28 12:54:53,070 INFO L78 Accepts]: Start accepts. Automaton has 4811 states and 4952 transitions. Word has length 1765 [2020-10-28 12:54:53,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:54:53,072 INFO L481 AbstractCegarLoop]: Abstraction has 4811 states and 4952 transitions. [2020-10-28 12:54:53,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:54:53,072 INFO L276 IsEmpty]: Start isEmpty. Operand 4811 states and 4952 transitions. [2020-10-28 12:54:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1841 [2020-10-28 12:54:53,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:54:53,109 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:54:53,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:54:53,110 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:54:53,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:54:53,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1226022805, now seen corresponding path program 1 times [2020-10-28 12:54:53,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:54:53,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528069032] [2020-10-28 12:54:53,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:54:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:54:53,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:55,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:54:56,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking...