/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/Problem16_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:21:47,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:21:47,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:21:47,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:21:47,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:21:47,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:21:47,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:21:47,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:21:47,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:21:47,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:21:47,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:21:47,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:21:47,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:21:47,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:21:47,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:21:47,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:21:47,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:21:47,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:21:47,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:21:47,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:21:47,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:21:47,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:21:47,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:21:47,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:21:47,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:21:47,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:21:47,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:21:47,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:21:47,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:21:47,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:21:47,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:21:47,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:21:47,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:21:47,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:21:47,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:21:47,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:21:47,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:21:47,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:21:47,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:21:47,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:21:47,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:21:47,334 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 13:21:47,359 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:21:47,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:21:47,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:21:47,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:21:47,361 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:21:47,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:21:47,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:21:47,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:21:47,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:21:47,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:21:47,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:21:47,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:21:47,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:21:47,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:21:47,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:21:47,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:21:47,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:21:47,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:21:47,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:21:47,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:21:47,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:21:47,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:21:47,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:21:47,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:21:47,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:21:47,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:21:47,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:21:47,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:21:47,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:21:47,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:21:47,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:21:47,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:21:47,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:21:47,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:21:47,781 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:21:47,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label25.c [2020-10-28 13:21:47,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f265432b/baa657e754d14964ac297607075d4922/FLAGa2d5a369a [2020-10-28 13:21:48,728 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:21:48,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label25.c [2020-10-28 13:21:48,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f265432b/baa657e754d14964ac297607075d4922/FLAGa2d5a369a [2020-10-28 13:21:48,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f265432b/baa657e754d14964ac297607075d4922 [2020-10-28 13:21:48,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:21:48,864 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:21:48,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:21:48,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:21:48,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:21:48,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:21:48" (1/1) ... [2020-10-28 13:21:48,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15a3f1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:48, skipping insertion in model container [2020-10-28 13:21:48,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:21:48" (1/1) ... [2020-10-28 13:21:48,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:21:48,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:21:49,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:21:49,801 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:21:50,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:21:50,107 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:21:50,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:50 WrapperNode [2020-10-28 13:21:50,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:21:50,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:21:50,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:21:50,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:21:50,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:50" (1/1) ... [2020-10-28 13:21:50,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:50" (1/1) ... [2020-10-28 13:21:50,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:50" (1/1) ... [2020-10-28 13:21:50,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:50" (1/1) ... [2020-10-28 13:21:50,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:50" (1/1) ... [2020-10-28 13:21:50,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:50" (1/1) ... [2020-10-28 13:21:50,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:50" (1/1) ... [2020-10-28 13:21:50,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:21:50,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:21:50,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:21:50,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:21:50,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:50" (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 13:21:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:21:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:21:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:21:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:21:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:21:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:21:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:21:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:21:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:21:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:21:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:21:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:21:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:21:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:21:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:21:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:21:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:21:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:21:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:21:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:21:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:21:52,634 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:21:52,635 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:21:52,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:21:52 BoogieIcfgContainer [2020-10-28 13:21:52,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:21:52,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:21:52,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:21:52,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:21:52,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:21:48" (1/3) ... [2020-10-28 13:21:52,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16481eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:21:52, skipping insertion in model container [2020-10-28 13:21:52,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:50" (2/3) ... [2020-10-28 13:21:52,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16481eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:21:52, skipping insertion in model container [2020-10-28 13:21:52,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:21:52" (3/3) ... [2020-10-28 13:21:52,647 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label25.c [2020-10-28 13:21:52,658 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:21:52,664 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:21:52,677 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:21:52,705 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:21:52,705 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:21:52,705 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:21:52,705 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:21:52,706 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:21:52,706 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:21:52,706 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:21:52,706 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:21:52,732 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:21:52,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 13:21:52,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:52,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:21:52,743 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:52,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:52,749 INFO L82 PathProgramCache]: Analyzing trace with hash 750469692, now seen corresponding path program 1 times [2020-10-28 13:21:52,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:52,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639396560] [2020-10-28 13:21:52,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:53,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:53,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:53,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 13:21:53,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:53,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-28 13:21:53,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:53,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:21:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:21:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 13:21:53,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:21:53,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:53,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:53,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:53,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:53,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:53,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:21:53,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:53,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:53,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:21:53,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:21:53,674 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 13:21:53,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639396560] [2020-10-28 13:21:53,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:21:53,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:21:53,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221888856] [2020-10-28 13:21:53,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:21:53,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:53,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:21:53,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:21:53,700 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-28 13:21:55,632 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:22:05,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:05,771 INFO L93 Difference]: Finished difference Result 1520 states and 2853 transitions. [2020-10-28 13:22:05,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:22:05,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-28 13:22:05,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:05,797 INFO L225 Difference]: With dead ends: 1520 [2020-10-28 13:22:05,797 INFO L226 Difference]: Without dead ends: 1039 [2020-10-28 13:22:05,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:05,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-28 13:22:05,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1035. [2020-10-28 13:22:05,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-28 13:22:05,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1484 transitions. [2020-10-28 13:22:05,947 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1484 transitions. Word has length 57 [2020-10-28 13:22:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:05,948 INFO L481 AbstractCegarLoop]: Abstraction has 1035 states and 1484 transitions. [2020-10-28 13:22:05,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:22:05,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1484 transitions. [2020-10-28 13:22:05,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 13:22:05,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:05,955 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:22:05,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:22:05,956 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:05,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:05,957 INFO L82 PathProgramCache]: Analyzing trace with hash 981017245, now seen corresponding path program 1 times [2020-10-28 13:22:05,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:05,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169742508] [2020-10-28 13:22:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:06,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:06,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:07,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:07,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:22:07,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:22:07,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-10-28 13:22:07,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:07,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:22:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:22:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:22:07,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:07,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:07,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:07,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:07,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:07,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:22:07,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:07,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:07,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:22:07,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:22:07,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:07,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:07,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:07,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:22:07,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:07,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-28 13:22:07,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:07,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:07,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:07,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:22:07,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:22:07,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169742508] [2020-10-28 13:22:07,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:22:07,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:22:07,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737597811] [2020-10-28 13:22:07,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:07,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:07,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:07,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:07,772 INFO L87 Difference]: Start difference. First operand 1035 states and 1484 transitions. Second operand 7 states. [2020-10-28 13:22:15,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:15,631 INFO L93 Difference]: Finished difference Result 3123 states and 4551 transitions. [2020-10-28 13:22:15,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:22:15,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-28 13:22:15,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:15,654 INFO L225 Difference]: With dead ends: 3123 [2020-10-28 13:22:15,654 INFO L226 Difference]: Without dead ends: 2094 [2020-10-28 13:22:15,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:22:15,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2020-10-28 13:22:15,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 2064. [2020-10-28 13:22:15,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2064 states. [2020-10-28 13:22:15,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 2671 transitions. [2020-10-28 13:22:15,757 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 2671 transitions. Word has length 133 [2020-10-28 13:22:15,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:15,760 INFO L481 AbstractCegarLoop]: Abstraction has 2064 states and 2671 transitions. [2020-10-28 13:22:15,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:15,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 2671 transitions. [2020-10-28 13:22:15,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-28 13:22:15,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:15,771 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 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 13:22:15,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:22:15,772 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:15,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:15,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1808141294, now seen corresponding path program 1 times [2020-10-28 13:22:15,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:15,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740745854] [2020-10-28 13:22:15,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:15,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:16,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:16,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:16,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:18,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:18,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:19,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:19,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-28 13:22:19,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:22:19,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3623 [2020-10-28 13:22:19,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:19,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:19,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:19,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:22:19,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 13:22:19,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:22:19,653 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:22:19,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:19,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:19,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:19,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:19,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:19,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:22:19,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:19,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:19,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:19,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:19,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:19,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:19,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:22:19,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:19,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 13:22:19,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:19,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:19,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:19,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:19,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:22:19,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:19,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:22:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:19,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:19,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:19,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:19,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:22:19,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:22:19,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 13:22:19,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:19,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:22:19,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 161 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:22:20,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740745854] [2020-10-28 13:22:20,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:20,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:22:20,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771045769] [2020-10-28 13:22:20,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:22:20,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:20,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:22:20,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:22:20,251 INFO L87 Difference]: Start difference. First operand 2064 states and 2671 transitions. Second operand 6 states. [2020-10-28 13:22:20,865 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:22:27,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:27,198 INFO L93 Difference]: Finished difference Result 4850 states and 6482 transitions. [2020-10-28 13:22:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 13:22:27,202 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 220 [2020-10-28 13:22:27,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:27,222 INFO L225 Difference]: With dead ends: 4850 [2020-10-28 13:22:27,222 INFO L226 Difference]: Without dead ends: 2792 [2020-10-28 13:22:27,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:27,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2020-10-28 13:22:27,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2774. [2020-10-28 13:22:27,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2774 states. [2020-10-28 13:22:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 3498 transitions. [2020-10-28 13:22:27,318 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 3498 transitions. Word has length 220 [2020-10-28 13:22:27,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:27,319 INFO L481 AbstractCegarLoop]: Abstraction has 2774 states and 3498 transitions. [2020-10-28 13:22:27,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:22:27,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 3498 transitions. [2020-10-28 13:22:27,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-28 13:22:27,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:27,330 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:22:27,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:22:27,331 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:27,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:27,331 INFO L82 PathProgramCache]: Analyzing trace with hash 546248970, now seen corresponding path program 1 times [2020-10-28 13:22:27,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:27,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137650641] [2020-10-28 13:22:27,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:27,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:27,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:27,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:28,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:28,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:29,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:32,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:32,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:32,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-28 13:22:32,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 13:22:32,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 13:22:32,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:32,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:32,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:32,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:22:32,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-28 13:22:32,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:32,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:32,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:32,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:32,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:32,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:32,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:22:32,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:32,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:32,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:32,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:32,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:32,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:32,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:32,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:32,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:32,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:22:32,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:32,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 13:22:32,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:32,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:22:32,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:32,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:22:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:32,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:32,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:32,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:32,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:22:32,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:22:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:22:32,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:32,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:22:32,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:33,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-28 13:22:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:33,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:33,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:33,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:22:33,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:33,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 13:22:33,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:33,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:33,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:33,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:33,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 13:22:33,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:33,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-28 13:22:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:33,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:33,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:33,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:22:33,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:33,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:22:33,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:33,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:33,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:33,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:22:33,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:33,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 372 proven. 218 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-28 13:22:33,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137650641] [2020-10-28 13:22:33,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:33,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 13:22:33,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084567521] [2020-10-28 13:22:33,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 13:22:33,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:33,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 13:22:33,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-28 13:22:33,603 INFO L87 Difference]: Start difference. First operand 2774 states and 3498 transitions. Second operand 9 states. [2020-10-28 13:22:38,022 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:22:42,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:42,180 INFO L93 Difference]: Finished difference Result 6974 states and 9001 transitions. [2020-10-28 13:22:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:22:42,181 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 413 [2020-10-28 13:22:42,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:42,199 INFO L225 Difference]: With dead ends: 6974 [2020-10-28 13:22:42,199 INFO L226 Difference]: Without dead ends: 3501 [2020-10-28 13:22:42,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:22:42,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2020-10-28 13:22:42,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 3127. [2020-10-28 13:22:42,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3127 states. [2020-10-28 13:22:42,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 3449 transitions. [2020-10-28 13:22:42,298 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 3449 transitions. Word has length 413 [2020-10-28 13:22:42,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:42,298 INFO L481 AbstractCegarLoop]: Abstraction has 3127 states and 3449 transitions. [2020-10-28 13:22:42,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 13:22:42,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 3449 transitions. [2020-10-28 13:22:42,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2020-10-28 13:22:42,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:42,314 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:22:42,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:22:42,315 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:42,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:42,315 INFO L82 PathProgramCache]: Analyzing trace with hash 811025871, now seen corresponding path program 1 times [2020-10-28 13:22:42,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:42,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548550334] [2020-10-28 13:22:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:42,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:42,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:42,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:47,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:47,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 603 [2020-10-28 13:22:47,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:22:47,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 13:22:47,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:47,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:47,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:47,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:22:47,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:22:47,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:47,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:47,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:47,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:47,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:47,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:47,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:22:47,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:47,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:47,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:47,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:47,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:47,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:47,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:47,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:47,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:47,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:22:47,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:47,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 13:22:47,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:47,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:47,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:47,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:47,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:22:47,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:47,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:22:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:47,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:48,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:48,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:22:48,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:48,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-28 13:22:48,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:48,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:22:48,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:48,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-28 13:22:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:48,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:48,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:48,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:22:48,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:48,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 13:22:48,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:48,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:48,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:48,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:22:48,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:48,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:48,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-28 13:22:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:48,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:48,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:48,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:22:48,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:22:48,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:48,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:22:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:48,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:48,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-28 13:22:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:48,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:48,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:48,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:22:48,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:48,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:22:48,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:48,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:48,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:48,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:22:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:48,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:22:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1168 backedges. 354 proven. 290 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2020-10-28 13:22:48,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548550334] [2020-10-28 13:22:48,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:48,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:22:48,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989416172] [2020-10-28 13:22:48,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:48,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:48,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:48,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:48,984 INFO L87 Difference]: Start difference. First operand 3127 states and 3449 transitions. Second operand 7 states. [2020-10-28 13:22:52,373 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:22:54,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:54,282 INFO L93 Difference]: Finished difference Result 7980 states and 8949 transitions. [2020-10-28 13:22:54,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:22:54,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 583 [2020-10-28 13:22:54,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:54,307 INFO L225 Difference]: With dead ends: 7980 [2020-10-28 13:22:54,308 INFO L226 Difference]: Without dead ends: 4859 [2020-10-28 13:22:54,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:22:54,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4859 states. [2020-10-28 13:22:54,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4859 to 4843. [2020-10-28 13:22:54,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4843 states. [2020-10-28 13:22:54,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4843 states to 4843 states and 5402 transitions. [2020-10-28 13:22:54,453 INFO L78 Accepts]: Start accepts. Automaton has 4843 states and 5402 transitions. Word has length 583 [2020-10-28 13:22:54,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:54,454 INFO L481 AbstractCegarLoop]: Abstraction has 4843 states and 5402 transitions. [2020-10-28 13:22:54,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:54,454 INFO L276 IsEmpty]: Start isEmpty. Operand 4843 states and 5402 transitions. [2020-10-28 13:22:54,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2020-10-28 13:22:54,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:54,489 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:22:54,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:22:54,489 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:54,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:54,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1717974960, now seen corresponding path program 1 times [2020-10-28 13:22:54,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:54,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507555087] [2020-10-28 13:22:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:54,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:54,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:55,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:56,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:59,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:59,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 781 [2020-10-28 13:22:59,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:22:59,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 13:22:59,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:59,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:59,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:59,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:22:59,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-28 13:22:59,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:59,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:59,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:59,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:59,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:59,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:59,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:22:59,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:59,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:59,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:59,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:59,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:22:59,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:59,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:59,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:00,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:00,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:23:00,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:00,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-28 13:23:00,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:00,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:00,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:00,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:00,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:23:00,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:00,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-28 13:23:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:00,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:00,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:00,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:23:00,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:00,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:23:00,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:00,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:23:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:00,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:00,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-28 13:23:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:00,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:00,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:00,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:23:00,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:00,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:23:00,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:00,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:00,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:00,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:23:00,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:00,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:00,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-28 13:23:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:00,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:00,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:00,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:23:00,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:00,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 13:23:00,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:00,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-28 13:23:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:00,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 196 proven. 418 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-10-28 13:23:01,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507555087] [2020-10-28 13:23:01,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:01,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:01,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248999242] [2020-10-28 13:23:01,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:01,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:01,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:01,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:01,447 INFO L87 Difference]: Start difference. First operand 4843 states and 5402 transitions. Second operand 7 states. [2020-10-28 13:23:01,612 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:23:05,559 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 13:23:06,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:06,598 INFO L93 Difference]: Finished difference Result 10401 states and 11600 transitions. [2020-10-28 13:23:06,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:23:06,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 763 [2020-10-28 13:23:06,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:06,627 INFO L225 Difference]: With dead ends: 10401 [2020-10-28 13:23:06,628 INFO L226 Difference]: Without dead ends: 5564 [2020-10-28 13:23:06,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:23:06,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2020-10-28 13:23:06,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 5530. [2020-10-28 13:23:06,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5530 states. [2020-10-28 13:23:06,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5530 states to 5530 states and 6114 transitions. [2020-10-28 13:23:06,790 INFO L78 Accepts]: Start accepts. Automaton has 5530 states and 6114 transitions. Word has length 763 [2020-10-28 13:23:06,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:06,791 INFO L481 AbstractCegarLoop]: Abstraction has 5530 states and 6114 transitions. [2020-10-28 13:23:06,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:06,791 INFO L276 IsEmpty]: Start isEmpty. Operand 5530 states and 6114 transitions. [2020-10-28 13:23:06,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2020-10-28 13:23:06,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:06,813 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:23:06,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:23:06,814 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:06,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:06,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1284675745, now seen corresponding path program 1 times [2020-10-28 13:23:06,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:06,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422840952] [2020-10-28 13:23:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:07,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:07,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:08,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:12,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:12,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1030 [2020-10-28 13:23:12,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:23:12,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-28 13:23:12,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:12,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:12,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:12,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:23:12,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:23:12,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:12,287 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:23:12,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:12,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:12,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:12,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:12,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:12,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:23:12,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:12,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:12,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:12,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:12,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:12,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:12,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:12,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:12,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:23:12,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:12,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 13:23:12,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:12,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:12,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:23:12,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:12,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:23:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:12,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:12,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:12,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:23:12,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:12,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-28 13:23:12,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:12,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:23:12,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:13,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:23:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:13,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:13,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:13,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:23:13,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:13,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:23:13,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:13,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:23:13,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:13,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:13,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-28 13:23:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:13,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:13,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:13,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:23:13,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:13,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:23:13,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:13,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:23:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:13,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:13,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-10-28 13:23:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:13,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:13,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:13,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:23:13,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:13,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 13:23:13,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:13,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-28 13:23:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:13,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1609 backedges. 501 proven. 426 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2020-10-28 13:23:15,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422840952] [2020-10-28 13:23:15,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:15,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:15,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061551864] [2020-10-28 13:23:15,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:15,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:15,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:15,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:15,175 INFO L87 Difference]: Start difference. First operand 5530 states and 6114 transitions. Second operand 7 states. [2020-10-28 13:23:15,331 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:23:19,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:19,809 INFO L93 Difference]: Finished difference Result 10386 states and 11540 transitions. [2020-10-28 13:23:19,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:23:19,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1010 [2020-10-28 13:23:19,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:19,839 INFO L225 Difference]: With dead ends: 10386 [2020-10-28 13:23:19,839 INFO L226 Difference]: Without dead ends: 5538 [2020-10-28 13:23:19,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:23:19,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5538 states. [2020-10-28 13:23:19,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5538 to 5530. [2020-10-28 13:23:19,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5530 states. [2020-10-28 13:23:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5530 states to 5530 states and 6112 transitions. [2020-10-28 13:23:19,978 INFO L78 Accepts]: Start accepts. Automaton has 5530 states and 6112 transitions. Word has length 1010 [2020-10-28 13:23:19,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:19,979 INFO L481 AbstractCegarLoop]: Abstraction has 5530 states and 6112 transitions. [2020-10-28 13:23:19,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:19,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5530 states and 6112 transitions. [2020-10-28 13:23:19,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1045 [2020-10-28 13:23:19,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:19,997 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:23:19,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:23:19,998 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:19,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:19,998 INFO L82 PathProgramCache]: Analyzing trace with hash -365657970, now seen corresponding path program 1 times [2020-10-28 13:23:19,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:19,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944569172] [2020-10-28 13:23:19,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:20,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:20,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:20,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:25,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:25,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1066 [2020-10-28 13:23:25,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:23:25,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 13:23:25,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:25,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:25,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:25,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:23:25,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:23:25,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:25,417 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:23:25,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:25,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:25,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:25,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:25,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:25,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:23:25,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:25,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:25,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:25,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:25,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:25,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:25,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:25,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:25,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:25,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:25,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:25,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 13:23:25,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:25,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:23:25,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:25,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:25,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:25,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:25,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:23:25,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:25,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 13:23:25,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:25,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:25,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:23:25,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:26,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:23:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:26,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:26,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:26,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:23:26,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:26,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:23:26,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:26,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:23:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:26,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:26,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:23:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:26,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:26,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:26,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:23:26,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:26,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:23:26,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:26,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:23:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:26,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:26,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-28 13:23:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:26,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:26,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:26,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:23:26,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:26,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:23:26,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:26,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:26,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:23:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:26,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:26,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2020-10-28 13:23:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:26,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:26,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:26,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:23:26,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:26,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 13:23:26,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:26,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:26,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:26,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-28 13:23:26,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:26,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2049 backedges. 469 proven. 465 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2020-10-28 13:23:27,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944569172] [2020-10-28 13:23:27,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:27,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:27,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475075041] [2020-10-28 13:23:27,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:27,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:27,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:27,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:27,860 INFO L87 Difference]: Start difference. First operand 5530 states and 6112 transitions. Second operand 7 states. [2020-10-28 13:23:29,699 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 13:23:32,784 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 13:23:34,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:34,062 INFO L93 Difference]: Finished difference Result 11750 states and 13127 transitions. [2020-10-28 13:23:34,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:23:34,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1044 [2020-10-28 13:23:34,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:34,087 INFO L225 Difference]: With dead ends: 11750 [2020-10-28 13:23:34,088 INFO L226 Difference]: Without dead ends: 6563 [2020-10-28 13:23:34,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:23:34,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6563 states. [2020-10-28 13:23:34,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6563 to 6214. [2020-10-28 13:23:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-10-28 13:23:34,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 6841 transitions. [2020-10-28 13:23:34,243 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 6841 transitions. Word has length 1044 [2020-10-28 13:23:34,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:34,244 INFO L481 AbstractCegarLoop]: Abstraction has 6214 states and 6841 transitions. [2020-10-28 13:23:34,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:34,244 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 6841 transitions. [2020-10-28 13:23:34,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1157 [2020-10-28 13:23:34,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:34,272 INFO L422 BasicCegarLoop]: trace histogram [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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:23:34,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:23:34,273 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:34,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:34,274 INFO L82 PathProgramCache]: Analyzing trace with hash -2030917376, now seen corresponding path program 1 times [2020-10-28 13:23:34,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:34,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507814120] [2020-10-28 13:23:34,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:34,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:34,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:35,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:37,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:37,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:39,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:39,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1182 [2020-10-28 13:23:39,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:23:39,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-28 13:23:39,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:39,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:39,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 793 [2020-10-28 13:23:39,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 13:23:39,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:39,797 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:23:39,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:39,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:39,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:39,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:39,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:23:39,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:39,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:39,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:39,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:39,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:39,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:39,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:23:39,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:39,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:39,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:39,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:39,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:23:39,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:39,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:23:39,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:39,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:39,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:40,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:23:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:40,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:40,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:40,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:23:40,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:40,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:23:40,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:40,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:40,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:40,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:40,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:40,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:40,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:23:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:40,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:40,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:40,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:23:40,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:40,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 13:23:40,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:40,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:40,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:40,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:40,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:40,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:40,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-28 13:23:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:40,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:40,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:40,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:23:40,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:40,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:23:40,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:40,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:40,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:40,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:40,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:23:40,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:40,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 783 [2020-10-28 13:23:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:40,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:40,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:23:40,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:40,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:23:40,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:40,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:40,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:40,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:40,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 13:23:40,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:40,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 925 [2020-10-28 13:23:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:40,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:40,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:40,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:23:40,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:40,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:23:40,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:40,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:23:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:40,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:40,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1035 [2020-10-28 13:23:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:40,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:40,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:40,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:23:40,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:40,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:23:40,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:40,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:40,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:40,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:23:40,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:40,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3211 backedges. 1034 proven. 178 refuted. 0 times theorem prover too weak. 1999 trivial. 0 not checked. [2020-10-28 13:23:41,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507814120] [2020-10-28 13:23:41,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:41,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:41,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953810123] [2020-10-28 13:23:41,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:41,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:41,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:41,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:41,301 INFO L87 Difference]: Start difference. First operand 6214 states and 6841 transitions. Second operand 7 states. [2020-10-28 13:23:43,694 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:23:46,364 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:23:47,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:47,074 INFO L93 Difference]: Finished difference Result 13464 states and 14970 transitions. [2020-10-28 13:23:47,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:23:47,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1156 [2020-10-28 13:23:47,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:47,114 INFO L225 Difference]: With dead ends: 13464 [2020-10-28 13:23:47,115 INFO L226 Difference]: Without dead ends: 7595 [2020-10-28 13:23:47,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 1 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 13:23:47,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7595 states. [2020-10-28 13:23:47,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7595 to 7244. [2020-10-28 13:23:47,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7244 states. [2020-10-28 13:23:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7244 states to 7244 states and 7931 transitions. [2020-10-28 13:23:47,271 INFO L78 Accepts]: Start accepts. Automaton has 7244 states and 7931 transitions. Word has length 1156 [2020-10-28 13:23:47,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:47,273 INFO L481 AbstractCegarLoop]: Abstraction has 7244 states and 7931 transitions. [2020-10-28 13:23:47,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:47,273 INFO L276 IsEmpty]: Start isEmpty. Operand 7244 states and 7931 transitions. [2020-10-28 13:23:47,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1186 [2020-10-28 13:23:47,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:47,296 INFO L422 BasicCegarLoop]: trace histogram [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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 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] [2020-10-28 13:23:47,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:23:47,296 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:47,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:47,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1554230576, now seen corresponding path program 1 times [2020-10-28 13:23:47,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:47,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666027813] [2020-10-28 13:23:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:47,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:47,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:48,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:52,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:52,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:52,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1211 [2020-10-28 13:23:52,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:23:52,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 13:23:52,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:52,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:52,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:52,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 676 [2020-10-28 13:23:52,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-28 13:23:52,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:52,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:52,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:52,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:52,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:52,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:52,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:23:52,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:52,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:52,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:52,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:52,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:52,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:52,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:52,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:52,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:52,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:52,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:52,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:23:52,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:52,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:52,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:53,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:53,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:53,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:53,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:23:53,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:53,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:23:53,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:53,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:53,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:53,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:53,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:53,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:53,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:23:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:53,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:53,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:53,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:23:53,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:53,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:23:53,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:53,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:53,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:53,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:53,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:53,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:53,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:23:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:53,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:53,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:53,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:23:53,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:53,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:23:53,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:53,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:53,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:53,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:53,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 13:23:53,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:53,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-28 13:23:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:53,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:53,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:53,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:23:53,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:53,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 13:23:53,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:53,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:53,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:53,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:53,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 13:23:53,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:53,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2020-10-28 13:23:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:53,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:53,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:53,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:23:53,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:53,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:23:53,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:53,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:23:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:53,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:53,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 954 [2020-10-28 13:23:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:53,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:53,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:53,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:23:53,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:53,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:23:53,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:53,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:23:53,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:53,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:53,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1064 [2020-10-28 13:23:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:53,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:53,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:53,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:23:53,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:53,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:23:53,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:53,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:23:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:53,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3310 backedges. 929 proven. 317 refuted. 0 times theorem prover too weak. 2064 trivial. 0 not checked. [2020-10-28 13:23:54,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666027813] [2020-10-28 13:23:54,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:54,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:54,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573801422] [2020-10-28 13:23:54,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:54,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:54,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:54,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:54,379 INFO L87 Difference]: Start difference. First operand 7244 states and 7931 transitions. Second operand 7 states. [2020-10-28 13:23:56,870 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:23:59,305 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:24:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:00,885 INFO L93 Difference]: Finished difference Result 18234 states and 20346 transitions. [2020-10-28 13:24:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:24:00,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1185 [2020-10-28 13:24:00,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:00,918 INFO L225 Difference]: With dead ends: 18234 [2020-10-28 13:24:00,918 INFO L226 Difference]: Without dead ends: 11335 [2020-10-28 13:24:00,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:24:00,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11335 states. [2020-10-28 13:24:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11335 to 10986. [2020-10-28 13:24:01,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10986 states. [2020-10-28 13:24:01,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10986 states to 10986 states and 12060 transitions. [2020-10-28 13:24:01,136 INFO L78 Accepts]: Start accepts. Automaton has 10986 states and 12060 transitions. Word has length 1185 [2020-10-28 13:24:01,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:01,138 INFO L481 AbstractCegarLoop]: Abstraction has 10986 states and 12060 transitions. [2020-10-28 13:24:01,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:01,138 INFO L276 IsEmpty]: Start isEmpty. Operand 10986 states and 12060 transitions. [2020-10-28 13:24:01,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1187 [2020-10-28 13:24:01,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:01,167 INFO L422 BasicCegarLoop]: trace histogram [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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 13:24:01,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:24:01,168 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:01,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:01,168 INFO L82 PathProgramCache]: Analyzing trace with hash -255230270, now seen corresponding path program 1 times [2020-10-28 13:24:01,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:01,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94383997] [2020-10-28 13:24:01,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:01,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:01,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:06,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:06,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1212 [2020-10-28 13:24:06,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:24:06,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-28 13:24:06,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:06,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:06,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:06,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 677 [2020-10-28 13:24:06,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-28 13:24:06,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:06,698 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:24:06,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:06,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:06,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:06,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:06,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:06,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:24:06,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:06,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:06,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:06,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:06,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:06,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:06,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:06,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:06,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:06,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:06,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:06,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:24:06,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:06,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:06,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:06,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:06,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:06,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:06,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:06,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:06,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:06,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:24:06,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:06,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:24:06,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:06,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:06,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:07,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:24:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:07,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:07,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:07,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:07,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:07,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:24:07,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:07,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:07,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:07,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:07,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:07,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:07,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:24:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:07,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:07,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:07,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:24:07,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:07,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:24:07,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:07,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 13:24:07,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:07,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:24:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:07,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:07,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:07,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:24:07,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:07,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 13:24:07,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:07,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 13:24:07,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:07,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 813 [2020-10-28 13:24:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:07,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:07,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:07,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:24:07,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:07,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:24:07,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:07,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:07,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:07,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:24:07,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:07,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:07,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 955 [2020-10-28 13:24:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:07,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:07,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:07,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:24:07,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:07,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:24:07,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:07,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:24:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:07,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:07,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1065 [2020-10-28 13:24:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:07,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:07,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:07,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:24:07,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:07,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:24:07,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:07,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:24:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:07,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3317 backedges. 930 proven. 317 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2020-10-28 13:24:08,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94383997] [2020-10-28 13:24:08,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:08,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:08,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531215588] [2020-10-28 13:24:08,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:08,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:08,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:08,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:08,273 INFO L87 Difference]: Start difference. First operand 10986 states and 12060 transitions. Second operand 7 states. [2020-10-28 13:24:10,804 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:24:13,222 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:24:14,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:14,507 INFO L93 Difference]: Finished difference Result 24022 states and 26647 transitions. [2020-10-28 13:24:14,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:24:14,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1186 [2020-10-28 13:24:14,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:14,550 INFO L225 Difference]: With dead ends: 24022 [2020-10-28 13:24:14,550 INFO L226 Difference]: Without dead ends: 13381 [2020-10-28 13:24:14,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:24:14,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13381 states. [2020-10-28 13:24:14,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13381 to 12681. [2020-10-28 13:24:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12681 states. [2020-10-28 13:24:14,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12681 states to 12681 states and 13792 transitions. [2020-10-28 13:24:14,792 INFO L78 Accepts]: Start accepts. Automaton has 12681 states and 13792 transitions. Word has length 1186 [2020-10-28 13:24:14,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:14,793 INFO L481 AbstractCegarLoop]: Abstraction has 12681 states and 13792 transitions. [2020-10-28 13:24:14,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:14,793 INFO L276 IsEmpty]: Start isEmpty. Operand 12681 states and 13792 transitions. [2020-10-28 13:24:14,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1212 [2020-10-28 13:24:14,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:14,825 INFO L422 BasicCegarLoop]: trace histogram [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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 13:24:14,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:24:14,825 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:14,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:14,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1577486756, now seen corresponding path program 1 times [2020-10-28 13:24:14,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:14,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304761269] [2020-10-28 13:24:14,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:15,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:15,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:15,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:20,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:20,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1237 [2020-10-28 13:24:20,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:24:20,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-28 13:24:20,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:20,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:20,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:20,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 702 [2020-10-28 13:24:20,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-28 13:24:20,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:20,330 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:24:20,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:20,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:20,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:20,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:20,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:20,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:24:20,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:20,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:20,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:20,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:20,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:20,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:20,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:20,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:20,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:24:20,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:20,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:20,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:20,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:20,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:20,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:20,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:24:20,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:24:20,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:20,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:20,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:20,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:20,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:20,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:20,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:24:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:20,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:20,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:20,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:20,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:20,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:24:20,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:20,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:20,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:20,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:20,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:20,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:20,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:24:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:20,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:20,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:20,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:24:20,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:20,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:24:20,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:20,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:24:20,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:20,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 694 [2020-10-28 13:24:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:20,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:20,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:20,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:24:20,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 13:24:20,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:20,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 13:24:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:21,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-28 13:24:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:21,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:21,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:21,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:24:21,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:21,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:24:21,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:21,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:24:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:21,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:21,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 980 [2020-10-28 13:24:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:21,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:21,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:21,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:24:21,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:21,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:24:21,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:21,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:21,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:21,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:24:21,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:21,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:21,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1090 [2020-10-28 13:24:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:21,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:21,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:21,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:24:21,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:21,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:24:21,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:21,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:24:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:21,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3469 backedges. 955 proven. 317 refuted. 0 times theorem prover too weak. 2197 trivial. 0 not checked. [2020-10-28 13:24:22,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304761269] [2020-10-28 13:24:22,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:22,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:22,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149528394] [2020-10-28 13:24:22,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:22,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:22,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:22,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:22,032 INFO L87 Difference]: Start difference. First operand 12681 states and 13792 transitions. Second operand 7 states. [2020-10-28 13:24:22,182 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:24:28,287 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:24:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:29,708 INFO L93 Difference]: Finished difference Result 28412 states and 31161 transitions. [2020-10-28 13:24:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:24:29,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1211 [2020-10-28 13:24:29,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:29,759 INFO L225 Difference]: With dead ends: 28412 [2020-10-28 13:24:29,759 INFO L226 Difference]: Without dead ends: 16076 [2020-10-28 13:24:29,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:24:29,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16076 states. [2020-10-28 13:24:30,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16076 to 15059. [2020-10-28 13:24:30,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15059 states. [2020-10-28 13:24:30,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15059 states to 15059 states and 16513 transitions. [2020-10-28 13:24:30,072 INFO L78 Accepts]: Start accepts. Automaton has 15059 states and 16513 transitions. Word has length 1211 [2020-10-28 13:24:30,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:30,073 INFO L481 AbstractCegarLoop]: Abstraction has 15059 states and 16513 transitions. [2020-10-28 13:24:30,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:30,074 INFO L276 IsEmpty]: Start isEmpty. Operand 15059 states and 16513 transitions. [2020-10-28 13:24:30,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1229 [2020-10-28 13:24:30,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:30,123 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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] [2020-10-28 13:24:30,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:24:30,123 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:30,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:30,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1258391290, now seen corresponding path program 1 times [2020-10-28 13:24:30,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:30,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399047445] [2020-10-28 13:24:30,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:30,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:30,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:31,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:34,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:35,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:35,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1250 [2020-10-28 13:24:35,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:24:35,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 13:24:35,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:35,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 802 [2020-10-28 13:24:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:24:35,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:35,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:35,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:35,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:35,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:35,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:35,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:24:35,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:35,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:35,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:35,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:35,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:35,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:35,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:35,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:35,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:35,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:35,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:35,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:24:35,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:35,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:35,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:35,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:35,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:36,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:36,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:24:36,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:36,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-28 13:24:36,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:36,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:36,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:36,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:36,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:36,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:24:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:36,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:36,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:36,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:36,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:36,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:24:36,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:36,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:36,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:36,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:24:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:36,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:36,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:36,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:24:36,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 13:24:36,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:36,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:24:36,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:36,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:24:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:36,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:36,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:36,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:24:36,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:36,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-28 13:24:36,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:36,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:36,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:36,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:36,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:24:36,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:37,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-28 13:24:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:37,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:37,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:37,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:24:37,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:37,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:24:37,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:37,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:37,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:37,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:24:37,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:37,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 1099 proven. 111 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2020-10-28 13:24:38,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399047445] [2020-10-28 13:24:38,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:38,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:38,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235343227] [2020-10-28 13:24:38,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:38,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:38,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:38,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:38,646 INFO L87 Difference]: Start difference. First operand 15059 states and 16513 transitions. Second operand 7 states. [2020-10-28 13:24:41,586 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:24:41,806 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:24:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:44,437 INFO L93 Difference]: Finished difference Result 29783 states and 32700 transitions. [2020-10-28 13:24:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:24:44,438 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1228 [2020-10-28 13:24:44,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:44,486 INFO L225 Difference]: With dead ends: 29783 [2020-10-28 13:24:44,486 INFO L226 Difference]: Without dead ends: 15069 [2020-10-28 13:24:44,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:24:44,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15069 states. [2020-10-28 13:24:44,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15069 to 15063. [2020-10-28 13:24:44,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15063 states. [2020-10-28 13:24:44,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15063 states to 15063 states and 16513 transitions. [2020-10-28 13:24:44,781 INFO L78 Accepts]: Start accepts. Automaton has 15063 states and 16513 transitions. Word has length 1228 [2020-10-28 13:24:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:44,782 INFO L481 AbstractCegarLoop]: Abstraction has 15063 states and 16513 transitions. [2020-10-28 13:24:44,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand 15063 states and 16513 transitions. [2020-10-28 13:24:44,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1266 [2020-10-28 13:24:44,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:44,818 INFO L422 BasicCegarLoop]: trace histogram [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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:24:44,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:24:44,819 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:44,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:44,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1481017978, now seen corresponding path program 1 times [2020-10-28 13:24:44,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:44,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522639925] [2020-10-28 13:24:44,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:45,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:45,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:47,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:48,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:50,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:50,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1291 [2020-10-28 13:24:50,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:24:50,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-28 13:24:50,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:50,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 794 [2020-10-28 13:24:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-28 13:24:50,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:50,472 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:24:50,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:50,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:50,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:50,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:50,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:50,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:24:50,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:50,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:50,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:50,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:50,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:50,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:50,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:50,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:50,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:50,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:50,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:50,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:24:50,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:50,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:50,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:50,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:50,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:50,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:50,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:50,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:50,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:50,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:24:50,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:50,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:24:50,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:50,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:50,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:50,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:24:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:50,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:50,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:50,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:50,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:50,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:24:50,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:50,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:50,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:50,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:24:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:50,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:50,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:50,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:24:50,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:50,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:24:50,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:50,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:50,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:50,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:24:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:50,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:50,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:50,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:24:50,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:50,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 13:24:50,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:50,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:24:50,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:51,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-28 13:24:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:51,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:51,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:51,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:24:51,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:51,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-28 13:24:51,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:51,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:51,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:51,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:51,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-28 13:24:51,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:51,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1034 [2020-10-28 13:24:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:51,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:51,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:51,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:24:51,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:51,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:24:51,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:51,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:24:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:51,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:51,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1144 [2020-10-28 13:24:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:51,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:51,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:51,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:24:51,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:24:51,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:51,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:24:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:51,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:52,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3396 backedges. 1213 proven. 178 refuted. 0 times theorem prover too weak. 2005 trivial. 0 not checked. [2020-10-28 13:24:52,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522639925] [2020-10-28 13:24:52,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:52,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:52,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140625946] [2020-10-28 13:24:52,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:52,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:52,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:52,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:52,919 INFO L87 Difference]: Start difference. First operand 15063 states and 16513 transitions. Second operand 7 states. [2020-10-28 13:24:55,973 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 13:24:56,334 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:24:59,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:59,877 INFO L93 Difference]: Finished difference Result 31139 states and 34112 transitions. [2020-10-28 13:24:59,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:24:59,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1265 [2020-10-28 13:24:59,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:59,917 INFO L225 Difference]: With dead ends: 31139 [2020-10-28 13:24:59,918 INFO L226 Difference]: Without dead ends: 16421 [2020-10-28 13:24:59,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:24:59,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16421 states. [2020-10-28 13:25:00,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16421 to 16419. [2020-10-28 13:25:00,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16419 states. [2020-10-28 13:25:00,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16419 states to 16419 states and 17913 transitions. [2020-10-28 13:25:00,205 INFO L78 Accepts]: Start accepts. Automaton has 16419 states and 17913 transitions. Word has length 1265 [2020-10-28 13:25:00,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:00,206 INFO L481 AbstractCegarLoop]: Abstraction has 16419 states and 17913 transitions. [2020-10-28 13:25:00,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:25:00,206 INFO L276 IsEmpty]: Start isEmpty. Operand 16419 states and 17913 transitions. [2020-10-28 13:25:00,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1306 [2020-10-28 13:25:00,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:00,244 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 2, 2, 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] [2020-10-28 13:25:00,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:25:00,244 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:00,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:00,245 INFO L82 PathProgramCache]: Analyzing trace with hash -765002141, now seen corresponding path program 1 times [2020-10-28 13:25:00,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:00,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734941295] [2020-10-28 13:25:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:00,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:00,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:01,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:04,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:05,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:05,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1329 [2020-10-28 13:25:05,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:25:05,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-28 13:25:05,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:05,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 881 [2020-10-28 13:25:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:25:05,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:05,853 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:25:05,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:05,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:05,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:05,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:05,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:05,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:25:05,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:05,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:05,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:05,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:05,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:05,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:05,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:25:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:05,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:05,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:05,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:25:05,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:05,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:25:05,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:05,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:05,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:05,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:05,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:05,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:05,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:25:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:06,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:06,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:06,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:25:06,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:06,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:25:06,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:06,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:06,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:06,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:06,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:06,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:06,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:25:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:06,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:06,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:06,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:25:06,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:06,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 13:25:06,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:06,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:06,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:06,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:06,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:06,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:06,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-28 13:25:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:06,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:06,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:06,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 13:25:06,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:06,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:25:06,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:06,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:06,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:06,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-10-28 13:25:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:06,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:06,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:06,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:25:06,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:06,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:25:06,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:06,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:06,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:06,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:06,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 13:25:06,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:06,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 871 [2020-10-28 13:25:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:06,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:06,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:06,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:25:06,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:06,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-28 13:25:06,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:06,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:06,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:06,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:25:06,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:25:06,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:07,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1144 [2020-10-28 13:25:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:07,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:07,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:07,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:25:07,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:07,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:25:07,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:07,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:07,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:07,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:25:07,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:07,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3223 backedges. 1231 proven. 111 refuted. 0 times theorem prover too weak. 1881 trivial. 0 not checked. [2020-10-28 13:25:09,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734941295] [2020-10-28 13:25:09,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:25:09,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:25:09,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932254734] [2020-10-28 13:25:09,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:25:09,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:09,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:25:09,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:25:09,378 INFO L87 Difference]: Start difference. First operand 16419 states and 17913 transitions. Second operand 7 states. [2020-10-28 13:25:12,484 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:25:12,715 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:25:15,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:25:15,521 INFO L93 Difference]: Finished difference Result 32501 states and 35493 transitions. [2020-10-28 13:25:15,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:25:15,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1305 [2020-10-28 13:25:15,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:25:15,560 INFO L225 Difference]: With dead ends: 32501 [2020-10-28 13:25:15,560 INFO L226 Difference]: Without dead ends: 16427 [2020-10-28 13:25:15,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:25:15,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16427 states. [2020-10-28 13:25:15,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16427 to 16419. [2020-10-28 13:25:15,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16419 states. [2020-10-28 13:25:15,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16419 states to 16419 states and 17877 transitions. [2020-10-28 13:25:15,878 INFO L78 Accepts]: Start accepts. Automaton has 16419 states and 17877 transitions. Word has length 1305 [2020-10-28 13:25:15,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:15,880 INFO L481 AbstractCegarLoop]: Abstraction has 16419 states and 17877 transitions. [2020-10-28 13:25:15,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:25:15,880 INFO L276 IsEmpty]: Start isEmpty. Operand 16419 states and 17877 transitions. [2020-10-28 13:25:15,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1343 [2020-10-28 13:25:15,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:15,909 INFO L422 BasicCegarLoop]: trace histogram [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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:15,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:25:15,910 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:15,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:15,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1546329284, now seen corresponding path program 1 times [2020-10-28 13:25:15,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:15,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548362216] [2020-10-28 13:25:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:16,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:16,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:16,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:18,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:21,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:21,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1370 [2020-10-28 13:25:21,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:25:21,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-28 13:25:21,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:21,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:21,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:21,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-28 13:25:21,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:25:21,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:21,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:21,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:21,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:21,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:21,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:21,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:25:21,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:21,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:21,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:21,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:21,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:21,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:21,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:25:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:21,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:21,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:21,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:25:21,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:21,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:25:21,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:21,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:21,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:21,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:25:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:21,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:21,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:21,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:25:21,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:21,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 13:25:21,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:21,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-28 13:25:21,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:21,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:25:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:21,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:22,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:22,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:25:22,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:22,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-28 13:25:22,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:22,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:22,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:22,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:25:22,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:25:22,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:25:22,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:25:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:22,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:22,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:22,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:25:22,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:22,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:25:22,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:22,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:22,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:22,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 13:25:22,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:22,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:22,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:25:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:22,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:22,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:22,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:25:22,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:22,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 13:25:22,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:22,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:25:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:22,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:22,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-28 13:25:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:22,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:22,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:22,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-28 13:25:22,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:22,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 13:25:22,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:22,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:22,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:22,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 327 [2020-10-28 13:25:22,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:22,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:22,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:25:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:22,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:22,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:22,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 13:25:22,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:22,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:25:22,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:22,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:22,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:22,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1111 [2020-10-28 13:25:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:22,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:22,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:22,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:25:22,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:22,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:25:22,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:22,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:22,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:22,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:25:22,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:22,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:22,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1221 [2020-10-28 13:25:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:23,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:23,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:23,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:25:23,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:23,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:25:23,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:23,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:25:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:24,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3396 backedges. 689 proven. 483 refuted. 0 times theorem prover too weak. 2224 trivial. 0 not checked. [2020-10-28 13:25:24,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548362216] [2020-10-28 13:25:24,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:25:24,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:25:24,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379508025] [2020-10-28 13:25:24,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:25:24,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:24,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:25:24,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:25:24,209 INFO L87 Difference]: Start difference. First operand 16419 states and 17877 transitions. Second operand 7 states. [2020-10-28 13:25:26,897 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 67