/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/Problem18_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:58:39,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:58:39,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:58:39,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:58:39,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:58:39,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:58:39,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:58:39,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:58:39,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:58:39,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:58:39,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:58:39,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:58:39,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:58:39,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:58:39,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:58:39,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:58:39,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:58:39,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:58:39,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:58:39,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:58:39,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:58:39,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:58:39,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:58:39,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:58:39,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:58:39,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:58:39,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:58:39,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:58:39,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:58:39,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:58:39,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:58:39,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:58:39,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:58:39,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:58:39,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:58:39,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:58:39,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:58:39,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:58:39,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:58:39,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:58:39,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:58:39,320 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 13:58:39,350 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:58:39,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:58:39,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:58:39,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:58:39,352 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:58:39,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:58:39,352 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:58:39,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:58:39,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:58:39,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:58:39,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:58:39,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:58:39,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:58:39,354 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:58:39,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:58:39,354 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:58:39,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:58:39,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:58:39,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:58:39,355 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:58:39,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:58:39,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:58:39,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:58:39,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:58:39,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:58:39,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:58:39,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:58:39,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:58:39,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:58:39,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:58:39,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:58:39,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:58:39,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:58:39,768 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:58:39,769 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:58:39,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label49.c [2020-10-28 13:58:39,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f433f855d/6c3d8aade40d4be7b84451d7140cd2de/FLAGa4aba7f03 [2020-10-28 13:58:40,978 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:58:40,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label49.c [2020-10-28 13:58:41,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f433f855d/6c3d8aade40d4be7b84451d7140cd2de/FLAGa4aba7f03 [2020-10-28 13:58:41,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f433f855d/6c3d8aade40d4be7b84451d7140cd2de [2020-10-28 13:58:41,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:58:41,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:58:41,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:58:41,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:58:41,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:58:41,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:58:41" (1/1) ... [2020-10-28 13:58:41,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53bee59a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:41, skipping insertion in model container [2020-10-28 13:58:41,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:58:41" (1/1) ... [2020-10-28 13:58:41,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:58:41,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:58:42,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:58:42,773 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:58:43,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:58:43,406 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:58:43,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:43 WrapperNode [2020-10-28 13:58:43,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:58:43,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:58:43,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:58:43,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:58:43,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:43" (1/1) ... [2020-10-28 13:58:43,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:43" (1/1) ... [2020-10-28 13:58:43,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:43" (1/1) ... [2020-10-28 13:58:43,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:43" (1/1) ... [2020-10-28 13:58:43,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:43" (1/1) ... [2020-10-28 13:58:43,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:43" (1/1) ... [2020-10-28 13:58:43,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:43" (1/1) ... [2020-10-28 13:58:43,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:58:43,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:58:43,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:58:43,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:58:43,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:43" (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 13:58:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:58:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:58:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:58:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:58:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:58:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:58:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:58:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:58:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:58:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:58:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:58:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:58:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:58:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:58:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:58:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:58:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:58:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:58:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:58:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:58:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:58:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:58:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:58:48,146 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:58:48,146 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:58:48,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:58:48 BoogieIcfgContainer [2020-10-28 13:58:48,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:58:48,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:58:48,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:58:48,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:58:48,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:58:41" (1/3) ... [2020-10-28 13:58:48,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50111ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:58:48, skipping insertion in model container [2020-10-28 13:58:48,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:43" (2/3) ... [2020-10-28 13:58:48,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50111ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:58:48, skipping insertion in model container [2020-10-28 13:58:48,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:58:48" (3/3) ... [2020-10-28 13:58:48,169 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label49.c [2020-10-28 13:58:48,183 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:58:48,191 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:58:48,206 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:58:48,253 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:58:48,253 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:58:48,254 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:58:48,254 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:58:48,254 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:58:48,254 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:58:48,254 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:58:48,254 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:58:48,297 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:58:48,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 13:58:48,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:48,305 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] [2020-10-28 13:58:48,306 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:48,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:48,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1405617776, now seen corresponding path program 1 times [2020-10-28 13:58:48,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:48,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647541896] [2020-10-28 13:58:48,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:48,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:49,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:49,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 13:58:49,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:49,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-28 13:58:49,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:49,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:58:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:58:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 13:58:49,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:58:49,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:58:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:49,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:49,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:49,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:58:49,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:49,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:58:49,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:49,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:49,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:58:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:58:49,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:58:49,307 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 13:58:49,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647541896] [2020-10-28 13:58:49,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:58:49,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:58:49,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884780370] [2020-10-28 13:58:49,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:58:49,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:58:49,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:58:49,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:58:49,340 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-28 13:58:58,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:58:58,814 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-28 13:58:58,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:58:58,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-28 13:58:58,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:58:58,859 INFO L225 Difference]: With dead ends: 2275 [2020-10-28 13:58:58,859 INFO L226 Difference]: Without dead ends: 1433 [2020-10-28 13:58:58,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:58:58,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-28 13:58:59,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-28 13:58:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-28 13:58:59,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2230 transitions. [2020-10-28 13:58:59,103 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2230 transitions. Word has length 29 [2020-10-28 13:58:59,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:58:59,105 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2230 transitions. [2020-10-28 13:58:59,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:58:59,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2230 transitions. [2020-10-28 13:58:59,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 13:58:59,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:59,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:58:59,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:58:59,118 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:59,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:59,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1514842711, now seen corresponding path program 1 times [2020-10-28 13:58:59,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:59,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605348284] [2020-10-28 13:58:59,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:59,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:00,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:00,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:59:00,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:59:00,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1173 [2020-10-28 13:59:00,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:00,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:00,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:59:00,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:59:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:59:00,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:59:00,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:00,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:00,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:00,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:00,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:59:00,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:00,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:59:00,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:00,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:00,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:00,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:00,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:59:00,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:00,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 13:59:00,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:00,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:59:00,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:59:00,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605348284] [2020-10-28 13:59:00,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:59:00,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:59:00,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580131585] [2020-10-28 13:59:00,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:59:00,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:00,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:59:00,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:00,731 INFO L87 Difference]: Start difference. First operand 1426 states and 2230 transitions. Second operand 7 states. [2020-10-28 13:59:11,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:11,790 INFO L93 Difference]: Finished difference Result 4354 states and 6840 transitions. [2020-10-28 13:59:11,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:59:11,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-28 13:59:11,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:11,808 INFO L225 Difference]: With dead ends: 4354 [2020-10-28 13:59:11,809 INFO L226 Difference]: Without dead ends: 2934 [2020-10-28 13:59:11,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:59:11,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-10-28 13:59:11,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 2879. [2020-10-28 13:59:11,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2879 states. [2020-10-28 13:59:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 3877 transitions. [2020-10-28 13:59:11,914 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 3877 transitions. Word has length 99 [2020-10-28 13:59:11,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:11,914 INFO L481 AbstractCegarLoop]: Abstraction has 2879 states and 3877 transitions. [2020-10-28 13:59:11,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:59:11,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 3877 transitions. [2020-10-28 13:59:11,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 13:59:11,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:11,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:11,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:59:11,918 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:11,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:11,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1235698991, now seen corresponding path program 1 times [2020-10-28 13:59:11,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:11,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449362839] [2020-10-28 13:59:11,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:11,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:12,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:12,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:12,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 13:59:12,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:59:12,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 802 [2020-10-28 13:59:12,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:12,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:59:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:59:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:59:12,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:12,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:12,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:12,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:12,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:12,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:59:12,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:12,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:59:12,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:12,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:12,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:13,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:13,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:59:13,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:13,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 13:59:13,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:13,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:59:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:13,154 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:59:13,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449362839] [2020-10-28 13:59:13,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:59:13,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:59:13,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721046878] [2020-10-28 13:59:13,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:59:13,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:13,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:59:13,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:13,157 INFO L87 Difference]: Start difference. First operand 2879 states and 3877 transitions. Second operand 7 states. [2020-10-28 13:59:24,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:24,906 INFO L93 Difference]: Finished difference Result 8802 states and 12016 transitions. [2020-10-28 13:59:24,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:59:24,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-28 13:59:24,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:24,943 INFO L225 Difference]: With dead ends: 8802 [2020-10-28 13:59:24,944 INFO L226 Difference]: Without dead ends: 5929 [2020-10-28 13:59:24,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:59:24,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5929 states. [2020-10-28 13:59:25,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5929 to 5842. [2020-10-28 13:59:25,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5842 states. [2020-10-28 13:59:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5842 states to 5842 states and 7282 transitions. [2020-10-28 13:59:25,155 INFO L78 Accepts]: Start accepts. Automaton has 5842 states and 7282 transitions. Word has length 119 [2020-10-28 13:59:25,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:25,157 INFO L481 AbstractCegarLoop]: Abstraction has 5842 states and 7282 transitions. [2020-10-28 13:59:25,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:59:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5842 states and 7282 transitions. [2020-10-28 13:59:25,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-28 13:59:25,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:25,176 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:59:25,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:59:25,177 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:25,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:25,177 INFO L82 PathProgramCache]: Analyzing trace with hash 303343832, now seen corresponding path program 1 times [2020-10-28 13:59:25,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:25,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979315167] [2020-10-28 13:59:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:25,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:25,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:26,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:28,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:28,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:59:28,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:59:28,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3514 [2020-10-28 13:59:28,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:28,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:28,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:59:28,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:59:28,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:59:28,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:28,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:28,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:28,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:28,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:28,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:59:28,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:28,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:59:28,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:28,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:29,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:29,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:29,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:59:29,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:29,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-28 13:59:29,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:29,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:59:29,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:59:29,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 13:59:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:29,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:29,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:29,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:59:29,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:29,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 13:59:29,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:29,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:29,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 13:59:29,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:29,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 42 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:59:29,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979315167] [2020-10-28 13:59:29,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:59:29,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:59:29,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291129747] [2020-10-28 13:59:29,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:59:29,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:29,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:59:29,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:29,698 INFO L87 Difference]: Start difference. First operand 5842 states and 7282 transitions. Second operand 7 states. [2020-10-28 13:59:38,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:38,783 INFO L93 Difference]: Finished difference Result 12600 states and 15574 transitions. [2020-10-28 13:59:38,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:59:38,784 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-28 13:59:38,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:38,818 INFO L225 Difference]: With dead ends: 12600 [2020-10-28 13:59:38,818 INFO L226 Difference]: Without dead ends: 6764 [2020-10-28 13:59:38,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:59:38,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6764 states. [2020-10-28 13:59:38,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6764 to 6623. [2020-10-28 13:59:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6623 states. [2020-10-28 13:59:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 8088 transitions. [2020-10-28 13:59:38,997 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 8088 transitions. Word has length 224 [2020-10-28 13:59:38,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:38,998 INFO L481 AbstractCegarLoop]: Abstraction has 6623 states and 8088 transitions. [2020-10-28 13:59:38,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:59:38,998 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 8088 transitions. [2020-10-28 13:59:39,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-28 13:59:39,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:39,007 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:59:39,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:59:39,007 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:39,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:39,008 INFO L82 PathProgramCache]: Analyzing trace with hash -239250409, now seen corresponding path program 1 times [2020-10-28 13:59:39,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:39,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946117543] [2020-10-28 13:59:39,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:39,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:40,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:40,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:44,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:44,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-28 13:59:44,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:59:44,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4942 [2020-10-28 13:59:44,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:44,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:44,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:59:44,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 13:59:44,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:44,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:44,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:44,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:44,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:44,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:44,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:59:44,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:44,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:44,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:44,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:44,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:44,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:44,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:59:44,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:44,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 13:59:44,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:44,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:44,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:44,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:44,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:59:44,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:59:44,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 13:59:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:44,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:44,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:44,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:59:44,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:44,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 13:59:44,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:44,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:59:44,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:44,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-28 13:59:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:44,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:44,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:44,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:59:44,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:44,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:59:44,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:44,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:44,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:44,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 13:59:44,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:44,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 186 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 13:59:45,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946117543] [2020-10-28 13:59:45,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:59:45,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:59:45,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787159757] [2020-10-28 13:59:45,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:59:45,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:45,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:59:45,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:45,182 INFO L87 Difference]: Start difference. First operand 6623 states and 8088 transitions. Second operand 7 states. [2020-10-28 13:59:58,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:58,932 INFO L93 Difference]: Finished difference Result 15696 states and 19918 transitions. [2020-10-28 13:59:58,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:59:58,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 410 [2020-10-28 13:59:58,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:58,971 INFO L225 Difference]: With dead ends: 15696 [2020-10-28 13:59:58,971 INFO L226 Difference]: Without dead ends: 8138 [2020-10-28 13:59:58,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:59:58,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8138 states. [2020-10-28 13:59:59,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8138 to 8044. [2020-10-28 13:59:59,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8044 states. [2020-10-28 13:59:59,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8044 states to 8044 states and 8825 transitions. [2020-10-28 13:59:59,174 INFO L78 Accepts]: Start accepts. Automaton has 8044 states and 8825 transitions. Word has length 410 [2020-10-28 13:59:59,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:59,175 INFO L481 AbstractCegarLoop]: Abstraction has 8044 states and 8825 transitions. [2020-10-28 13:59:59,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:59:59,175 INFO L276 IsEmpty]: Start isEmpty. Operand 8044 states and 8825 transitions. [2020-10-28 13:59:59,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-10-28 13:59:59,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:59,184 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:59,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:59:59,185 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:59,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:59,185 INFO L82 PathProgramCache]: Analyzing trace with hash -36952608, now seen corresponding path program 1 times [2020-10-28 13:59:59,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:59,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000253232] [2020-10-28 13:59:59,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:59,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:00,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:00,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:04,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:04,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 442 [2020-10-28 14:00:04,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:00:04,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 14:00:04,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:04,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 14:00:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 14:00:04,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:04,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:04,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:04,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:04,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:04,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:00:04,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:04,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:04,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:04,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:04,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:04,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:00:04,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-28 14:00:04,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:04,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 14:00:04,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:05,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:00:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:05,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:05,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:05,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:00:05,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:05,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 14:00:05,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:05,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:00:05,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:05,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 14:00:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:05,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:05,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:05,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 14:00:05,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:05,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 14:00:05,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:05,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:05,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:05,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:05,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 14:00:05,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:05,544 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:00:05,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000253232] [2020-10-28 14:00:05,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:05,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:00:05,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415678217] [2020-10-28 14:00:05,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:05,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:05,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:05,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:05,547 INFO L87 Difference]: Start difference. First operand 8044 states and 8825 transitions. Second operand 7 states. [2020-10-28 14:00:14,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:14,172 INFO L93 Difference]: Finished difference Result 19153 states and 21553 transitions. [2020-10-28 14:00:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:00:14,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 426 [2020-10-28 14:00:14,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:14,213 INFO L225 Difference]: With dead ends: 19153 [2020-10-28 14:00:14,214 INFO L226 Difference]: Without dead ends: 11817 [2020-10-28 14:00:14,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:00:14,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11817 states. [2020-10-28 14:00:14,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11817 to 11737. [2020-10-28 14:00:14,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11737 states. [2020-10-28 14:00:14,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11737 states to 11737 states and 13028 transitions. [2020-10-28 14:00:14,461 INFO L78 Accepts]: Start accepts. Automaton has 11737 states and 13028 transitions. Word has length 426 [2020-10-28 14:00:14,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:14,462 INFO L481 AbstractCegarLoop]: Abstraction has 11737 states and 13028 transitions. [2020-10-28 14:00:14,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:00:14,462 INFO L276 IsEmpty]: Start isEmpty. Operand 11737 states and 13028 transitions. [2020-10-28 14:00:14,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-10-28 14:00:14,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:14,476 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:14,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:00:14,476 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:14,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:14,477 INFO L82 PathProgramCache]: Analyzing trace with hash 988376593, now seen corresponding path program 1 times [2020-10-28 14:00:14,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:14,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133977843] [2020-10-28 14:00:14,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:14,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:14,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:15,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:15,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:19,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:19,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 541 [2020-10-28 14:00:19,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:00:19,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 14:00:19,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:19,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:19,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:19,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 14:00:19,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 14:00:19,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:19,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:19,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:19,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:19,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:19,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:19,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:00:19,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:19,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:19,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:19,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:19,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:19,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:19,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:19,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:19,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:19,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:00:19,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:19,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 14:00:20,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:20,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:20,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:20,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:00:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:20,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:20,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:20,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:00:20,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:20,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:00:20,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:20,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:20,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:20,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:20,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:20,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:20,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 14:00:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:20,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:20,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:20,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:00:20,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:20,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 14:00:20,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:20,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:20,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:20,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:20,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 14:00:20,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:20,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 14:00:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:20,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:20,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:20,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 14:00:20,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:20,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 14:00:20,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:20,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:20,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:20,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:20,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 14:00:20,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:20,690 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 14:00:20,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133977843] [2020-10-28 14:00:20,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:20,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:00:20,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903212812] [2020-10-28 14:00:20,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:20,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:20,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:20,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:20,694 INFO L87 Difference]: Start difference. First operand 11737 states and 13028 transitions. Second operand 7 states. [2020-10-28 14:00:30,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:30,844 INFO L93 Difference]: Finished difference Result 31606 states and 35956 transitions. [2020-10-28 14:00:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:00:30,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 523 [2020-10-28 14:00:30,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:30,901 INFO L225 Difference]: With dead ends: 31606 [2020-10-28 14:00:30,902 INFO L226 Difference]: Without dead ends: 20577 [2020-10-28 14:00:30,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:00:30,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20577 states. [2020-10-28 14:00:31,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20577 to 20472. [2020-10-28 14:00:31,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20472 states. [2020-10-28 14:00:31,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20472 states to 20472 states and 22625 transitions. [2020-10-28 14:00:31,541 INFO L78 Accepts]: Start accepts. Automaton has 20472 states and 22625 transitions. Word has length 523 [2020-10-28 14:00:31,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:31,542 INFO L481 AbstractCegarLoop]: Abstraction has 20472 states and 22625 transitions. [2020-10-28 14:00:31,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:00:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 20472 states and 22625 transitions. [2020-10-28 14:00:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2020-10-28 14:00:31,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:31,562 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:31,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:00:31,562 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:31,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:31,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1023912223, now seen corresponding path program 1 times [2020-10-28 14:00:31,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:31,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153099043] [2020-10-28 14:00:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:31,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:32,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:36,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:36,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 608 [2020-10-28 14:00:36,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:00:36,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4581 [2020-10-28 14:00:36,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:36,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:36,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:36,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 577 [2020-10-28 14:00:36,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:00:36,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:36,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:36,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:36,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:36,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:36,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:36,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:00:36,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:36,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:36,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:36,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:36,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:36,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:36,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:00:36,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:36,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 14:00:36,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:36,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:36,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:36,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:36,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:36,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:36,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:00:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:36,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:36,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:36,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:00:36,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:36,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:00:36,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:36,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:36,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:36,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:36,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:36,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:36,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 14:00:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:36,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:36,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:36,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 14:00:36,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:36,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 14:00:36,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:36,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:36,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:36,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:36,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:36,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-10-28 14:00:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:36,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:36,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:36,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 14:00:36,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:36,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 14:00:36,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:36,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:36,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:36,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:36,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 14:00:36,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 66 proven. 3 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2020-10-28 14:00:37,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153099043] [2020-10-28 14:00:37,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:37,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 14:00:37,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338291478] [2020-10-28 14:00:37,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:00:37,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:37,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:00:37,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:00:37,346 INFO L87 Difference]: Start difference. First operand 20472 states and 22625 transitions. Second operand 5 states. [2020-10-28 14:00:46,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:46,191 INFO L93 Difference]: Finished difference Result 49527 states and 55770 transitions. [2020-10-28 14:00:46,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:00:46,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 590 [2020-10-28 14:00:46,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:46,271 INFO L225 Difference]: With dead ends: 49527 [2020-10-28 14:00:46,271 INFO L226 Difference]: Without dead ends: 29061 [2020-10-28 14:00:46,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:00:46,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29061 states. [2020-10-28 14:00:46,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29061 to 28335. [2020-10-28 14:00:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28335 states. [2020-10-28 14:00:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28335 states to 28335 states and 31380 transitions. [2020-10-28 14:00:46,819 INFO L78 Accepts]: Start accepts. Automaton has 28335 states and 31380 transitions. Word has length 590 [2020-10-28 14:00:46,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:46,820 INFO L481 AbstractCegarLoop]: Abstraction has 28335 states and 31380 transitions. [2020-10-28 14:00:46,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:00:46,821 INFO L276 IsEmpty]: Start isEmpty. Operand 28335 states and 31380 transitions. [2020-10-28 14:00:46,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2020-10-28 14:00:46,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:46,833 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:46,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:00:46,834 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:46,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:46,834 INFO L82 PathProgramCache]: Analyzing trace with hash -459359900, now seen corresponding path program 1 times [2020-10-28 14:00:46,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:46,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809930318] [2020-10-28 14:00:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:47,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:47,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:47,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:51,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:51,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 650 [2020-10-28 14:00:51,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:00:51,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 14:00:51,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:51,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 450 [2020-10-28 14:00:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-28 14:00:51,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:52,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:52,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:52,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:52,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:52,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:52,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:00:52,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:52,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:52,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:52,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:52,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:52,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:52,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:52,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:52,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:52,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 14:00:52,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:52,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 14:00:52,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:52,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:52,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:52,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:52,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:52,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:52,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:00:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:52,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:52,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:52,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:00:52,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:52,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:00:52,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:52,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:52,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:52,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:52,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:52,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:52,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-28 14:00:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:52,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:52,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:52,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:00:52,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:52,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 14:00:52,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:52,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:52,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:52,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:52,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 14:00:52,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:52,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-10-28 14:00:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:52,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:52,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:52,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 14:00:52,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:52,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-28 14:00:52,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:52,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:52,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:52,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:52,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 14:00:52,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-28 14:00:53,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809930318] [2020-10-28 14:00:53,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:53,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:00:53,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658369537] [2020-10-28 14:00:53,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:53,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:53,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:53,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:53,395 INFO L87 Difference]: Start difference. First operand 28335 states and 31380 transitions. Second operand 7 states. [2020-10-28 14:01:03,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:03,653 INFO L93 Difference]: Finished difference Result 66766 states and 76259 transitions. [2020-10-28 14:01:03,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:01:03,655 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 632 [2020-10-28 14:01:03,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:03,774 INFO L225 Difference]: With dead ends: 66766 [2020-10-28 14:01:03,774 INFO L226 Difference]: Without dead ends: 39147 [2020-10-28 14:01:03,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:01:03,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39147 states. [2020-10-28 14:01:04,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39147 to 39061. [2020-10-28 14:01:04,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39061 states. [2020-10-28 14:01:04,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39061 states to 39061 states and 43679 transitions. [2020-10-28 14:01:04,690 INFO L78 Accepts]: Start accepts. Automaton has 39061 states and 43679 transitions. Word has length 632 [2020-10-28 14:01:04,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:04,692 INFO L481 AbstractCegarLoop]: Abstraction has 39061 states and 43679 transitions. [2020-10-28 14:01:04,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:01:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand 39061 states and 43679 transitions. [2020-10-28 14:01:04,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2020-10-28 14:01:04,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:04,706 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:04,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:01:04,707 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:04,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:04,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1307983346, now seen corresponding path program 1 times [2020-10-28 14:01:04,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:04,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135126434] [2020-10-28 14:01:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:04,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:05,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:05,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:09,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:09,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 677 [2020-10-28 14:01:09,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:01:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 14:01:09,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:09,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 450 [2020-10-28 14:01:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-28 14:01:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:10,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:10,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:10,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:10,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:10,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:10,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:01:10,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:10,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:10,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:10,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:10,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:10,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:10,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:10,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:10,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:10,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 14:01:10,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:10,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 14:01:10,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:10,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:10,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:10,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:01:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:10,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:10,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:10,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:01:10,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:10,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:01:10,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:10,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:10,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:10,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-28 14:01:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:10,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:10,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:10,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:01:10,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:10,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 14:01:10,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:10,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 14:01:10,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:10,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-10-28 14:01:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:10,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:10,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:10,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-28 14:01:10,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:10,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-28 14:01:10,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:10,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-28 14:01:10,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:11,057 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 378 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-28 14:01:11,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135126434] [2020-10-28 14:01:11,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:11,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:01:11,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061960352] [2020-10-28 14:01:11,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:01:11,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:11,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:01:11,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:01:11,060 INFO L87 Difference]: Start difference. First operand 39061 states and 43679 transitions. Second operand 7 states. [2020-10-28 14:01:22,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:22,240 INFO L93 Difference]: Finished difference Result 91646 states and 104656 transitions. [2020-10-28 14:01:22,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:01:22,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 659 [2020-10-28 14:01:22,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:22,370 INFO L225 Difference]: With dead ends: 91646 [2020-10-28 14:01:22,371 INFO L226 Difference]: Without dead ends: 49047 [2020-10-28 14:01:22,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:01:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49047 states. [2020-10-28 14:01:23,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49047 to 48970. [2020-10-28 14:01:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48970 states. [2020-10-28 14:01:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48970 states to 48970 states and 54415 transitions. [2020-10-28 14:01:23,295 INFO L78 Accepts]: Start accepts. Automaton has 48970 states and 54415 transitions. Word has length 659 [2020-10-28 14:01:23,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:23,296 INFO L481 AbstractCegarLoop]: Abstraction has 48970 states and 54415 transitions. [2020-10-28 14:01:23,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:01:23,297 INFO L276 IsEmpty]: Start isEmpty. Operand 48970 states and 54415 transitions. [2020-10-28 14:01:23,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2020-10-28 14:01:23,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:23,313 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:23,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:01:23,314 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:23,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:23,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1145749654, now seen corresponding path program 1 times [2020-10-28 14:01:23,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:23,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324115703] [2020-10-28 14:01:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:23,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:23,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:23,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:23,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:23,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:28,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:28,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 739 [2020-10-28 14:01:28,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:01:28,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 14:01:28,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:28,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:28,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:28,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 569 [2020-10-28 14:01:28,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 14:01:28,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:28,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:28,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:28,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:28,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:28,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:01:28,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:28,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:28,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:28,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:28,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:28,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 14:01:28,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 14:01:28,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:28,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:28,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:01:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:28,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:28,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:28,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:01:28,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:28,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:01:28,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:28,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:28,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:28,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:28,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:28,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:28,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-28 14:01:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:28,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:28,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:28,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:01:28,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:28,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:01:28,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:28,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:28,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:28,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-28 14:01:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:28,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:28,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:28,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 14:01:28,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:28,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:01:28,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:28,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:28,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:28,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-10-28 14:01:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:28,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:29,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:29,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:01:29,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:29,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:01:29,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:29,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:29,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:29,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:29,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 14:01:29,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:29,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2020-10-28 14:01:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:29,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:29,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:29,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 14:01:29,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:29,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 14:01:29,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:29,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:29,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:29,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:29,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 14:01:29,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 482 proven. 2 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2020-10-28 14:01:30,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324115703] [2020-10-28 14:01:30,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:30,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:01:30,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30809346] [2020-10-28 14:01:30,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:01:30,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:30,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:01:30,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:01:30,036 INFO L87 Difference]: Start difference. First operand 48970 states and 54415 transitions. Second operand 8 states. [2020-10-28 14:01:47,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:47,860 INFO L93 Difference]: Finished difference Result 105538 states and 121098 transitions. [2020-10-28 14:01:47,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:01:47,867 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 717 [2020-10-28 14:01:47,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:48,050 INFO L225 Difference]: With dead ends: 105538 [2020-10-28 14:01:48,050 INFO L226 Difference]: Without dead ends: 56570 [2020-10-28 14:01:48,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:01:48,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56570 states. [2020-10-28 14:01:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56570 to 55352. [2020-10-28 14:01:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55352 states. [2020-10-28 14:01:49,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55352 states to 55352 states and 61471 transitions. [2020-10-28 14:01:49,302 INFO L78 Accepts]: Start accepts. Automaton has 55352 states and 61471 transitions. Word has length 717 [2020-10-28 14:01:49,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:49,303 INFO L481 AbstractCegarLoop]: Abstraction has 55352 states and 61471 transitions. [2020-10-28 14:01:49,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:01:49,303 INFO L276 IsEmpty]: Start isEmpty. Operand 55352 states and 61471 transitions. [2020-10-28 14:01:49,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2020-10-28 14:01:49,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:49,321 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 14:01:49,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:01:49,321 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:49,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:49,322 INFO L82 PathProgramCache]: Analyzing trace with hash 713253759, now seen corresponding path program 1 times [2020-10-28 14:01:49,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:49,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578192551] [2020-10-28 14:01:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:49,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:50,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:54,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:54,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 767 [2020-10-28 14:01:54,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:01:54,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4738 [2020-10-28 14:01:54,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:54,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 736 [2020-10-28 14:01:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:01:54,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:54,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:54,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:54,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:54,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:54,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:54,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:01:54,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:54,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:54,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:54,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:54,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:54,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:54,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:54,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:54,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:54,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:01:54,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 14:01:54,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:54,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:54,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:54,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:01:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:54,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:54,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:54,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:01:54,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:54,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:01:54,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:54,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:54,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:54,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:54,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:54,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:54,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 14:01:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:54,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:54,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:54,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 14:01:54,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:54,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 14:01:54,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:54,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:54,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:54,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:54,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:54,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:54,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-10-28 14:01:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:54,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:55,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:55,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-28 14:01:55,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:55,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 14:01:55,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:55,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:55,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:55,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:55,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-28 14:01:55,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 66 proven. 3 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2020-10-28 14:01:55,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578192551] [2020-10-28 14:01:55,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:55,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 14:01:55,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364008409] [2020-10-28 14:01:55,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:01:55,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:55,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:01:55,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:01:55,485 INFO L87 Difference]: Start difference. First operand 55352 states and 61471 transitions. Second operand 5 states. [2020-10-28 14:02:04,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:02:04,999 INFO L93 Difference]: Finished difference Result 118441 states and 131988 transitions. [2020-10-28 14:02:04,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:02:05,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 749 [2020-10-28 14:02:05,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:02:05,162 INFO L225 Difference]: With dead ends: 118441 [2020-10-28 14:02:05,162 INFO L226 Difference]: Without dead ends: 63805 [2020-10-28 14:02:05,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:02:05,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63805 states. [2020-10-28 14:02:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63805 to 63791. [2020-10-28 14:02:06,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63791 states. [2020-10-28 14:02:06,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63791 states to 63791 states and 70292 transitions. [2020-10-28 14:02:06,876 INFO L78 Accepts]: Start accepts. Automaton has 63791 states and 70292 transitions. Word has length 749 [2020-10-28 14:02:06,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:02:06,877 INFO L481 AbstractCegarLoop]: Abstraction has 63791 states and 70292 transitions. [2020-10-28 14:02:06,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:02:06,877 INFO L276 IsEmpty]: Start isEmpty. Operand 63791 states and 70292 transitions. [2020-10-28 14:02:06,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2020-10-28 14:02:06,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:02:06,903 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:06,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:02:06,903 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:02:06,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:02:06,904 INFO L82 PathProgramCache]: Analyzing trace with hash -109899946, now seen corresponding path program 1 times [2020-10-28 14:02:06,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:02:06,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031536240] [2020-10-28 14:02:06,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:02:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:07,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:07,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:07,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:07,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking...