/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/Problem15_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:00:10,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:00:10,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:00:10,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:00:10,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:00:10,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:00:10,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:00:10,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:00:10,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:00:10,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:00:10,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:00:10,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:00:10,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:00:10,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:00:10,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:00:10,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:00:10,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:00:10,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:00:10,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:00:10,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:00:10,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:00:10,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:00:10,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:00:10,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:00:10,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:00:10,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:00:10,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:00:10,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:00:10,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:00:10,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:00:10,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:00:10,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:00:10,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:00:10,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:00:10,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:00:10,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:00:10,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:00:10,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:00:10,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:00:10,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:00:10,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:00:10,925 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 13:00:10,982 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:00:10,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:00:10,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:00:10,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:00:10,987 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:00:10,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:00:10,988 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:00:10,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:00:10,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:00:10,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:00:10,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:00:10,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:00:10,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:00:10,991 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:00:10,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:00:10,991 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:00:10,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:00:10,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:00:10,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:00:10,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:00:10,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:00:10,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:00:10,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:00:10,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:00:10,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:00:10,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:00:10,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:00:10,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:00:10,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:00:10,994 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:00:11,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:00:11,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:00:11,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:00:11,455 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:00:11,455 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:00:11,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label08.c [2020-10-28 13:00:11,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4560e274/4bb3c544d27b42f496d4e5902146fcde/FLAGb5e252b09 [2020-10-28 13:00:12,402 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:00:12,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label08.c [2020-10-28 13:00:12,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4560e274/4bb3c544d27b42f496d4e5902146fcde/FLAGb5e252b09 [2020-10-28 13:00:12,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4560e274/4bb3c544d27b42f496d4e5902146fcde [2020-10-28 13:00:12,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:00:12,517 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:00:12,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:00:12,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:00:12,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:00:12,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:00:12" (1/1) ... [2020-10-28 13:00:12,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed1427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:12, skipping insertion in model container [2020-10-28 13:00:12,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:00:12" (1/1) ... [2020-10-28 13:00:12,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:00:12,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:00:13,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:00:13,647 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:00:13,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:00:13,983 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:00:13,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:13 WrapperNode [2020-10-28 13:00:13,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:00:13,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:00:13,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:00:13,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:00:14,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:13" (1/1) ... [2020-10-28 13:00:14,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:13" (1/1) ... [2020-10-28 13:00:14,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:13" (1/1) ... [2020-10-28 13:00:14,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:13" (1/1) ... [2020-10-28 13:00:14,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:13" (1/1) ... [2020-10-28 13:00:14,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:13" (1/1) ... [2020-10-28 13:00:14,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:13" (1/1) ... [2020-10-28 13:00:14,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:00:14,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:00:14,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:00:14,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:00:14,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:13" (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 13:00:14,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:00:14,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:00:14,315 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:00:14,315 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:00:14,315 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:00:14,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:00:14,316 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:00:14,316 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:00:14,316 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:00:14,316 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:00:14,316 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:00:14,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:00:14,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:00:14,317 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:00:14,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:00:14,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:00:14,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:00:14,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:00:14,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:00:14,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:00:14,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:00:18,427 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:00:18,427 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:00:18,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:00:18 BoogieIcfgContainer [2020-10-28 13:00:18,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:00:18,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:00:18,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:00:18,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:00:18,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:00:12" (1/3) ... [2020-10-28 13:00:18,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7060c316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:00:18, skipping insertion in model container [2020-10-28 13:00:18,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:00:13" (2/3) ... [2020-10-28 13:00:18,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7060c316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:00:18, skipping insertion in model container [2020-10-28 13:00:18,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:00:18" (3/3) ... [2020-10-28 13:00:18,446 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label08.c [2020-10-28 13:00:18,460 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:00:18,467 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:00:18,482 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:00:18,529 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:00:18,529 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:00:18,529 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:00:18,529 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:00:18,530 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:00:18,530 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:00:18,530 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:00:18,530 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:00:18,574 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:00:18,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 13:00:18,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:18,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:00:18,585 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:18,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:18,592 INFO L82 PathProgramCache]: Analyzing trace with hash 806688153, now seen corresponding path program 1 times [2020-10-28 13:00:18,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:18,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433079075] [2020-10-28 13:00:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:18,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:19,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:19,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 13:00:19,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:19,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 827 [2020-10-28 13:00:19,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:19,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:19,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:00:19,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:00:19,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 13:00:19,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:00:19,899 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:00:19,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:19,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:19,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:19,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:19,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:19,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:00:19,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:19,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:19,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:19,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:19,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:00:19,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:19,956 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 13:00:19,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433079075] [2020-10-28 13:00:19,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:00:19,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:00:19,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376558142] [2020-10-28 13:00:19,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:00:19,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:19,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:00:19,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:00:19,987 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 13:00:29,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:29,484 INFO L93 Difference]: Finished difference Result 1208 states and 2172 transitions. [2020-10-28 13:00:29,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:00:29,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-28 13:00:29,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:29,520 INFO L225 Difference]: With dead ends: 1208 [2020-10-28 13:00:29,520 INFO L226 Difference]: Without dead ends: 703 [2020-10-28 13:00:29,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:00:29,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-28 13:00:29,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2020-10-28 13:00:29,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-28 13:00:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1016 transitions. [2020-10-28 13:00:29,654 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1016 transitions. Word has length 58 [2020-10-28 13:00:29,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:29,655 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1016 transitions. [2020-10-28 13:00:29,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:00:29,656 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1016 transitions. [2020-10-28 13:00:29,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-28 13:00:29,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:29,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:00:29,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:00:29,668 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:29,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:29,670 INFO L82 PathProgramCache]: Analyzing trace with hash 864561139, now seen corresponding path program 1 times [2020-10-28 13:00:29,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:29,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199246151] [2020-10-28 13:00:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:29,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:30,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:31,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:31,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:31,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 13:00:31,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:00:31,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1717 [2020-10-28 13:00:31,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:31,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:00:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:00:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:00:31,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:31,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:31,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:31,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:31,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:31,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:31,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:00:31,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:31,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:31,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:00:31,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 13:00:31,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:31,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:31,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:31,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:00:31,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:31,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-28 13:00:31,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:31,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:31,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:31,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:31,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:00:31,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:32,020 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:00:32,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199246151] [2020-10-28 13:00:32,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:00:32,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:00:32,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844127778] [2020-10-28 13:00:32,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:00:32,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:32,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:00:32,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:00:32,029 INFO L87 Difference]: Start difference. First operand 697 states and 1016 transitions. Second operand 7 states. [2020-10-28 13:00:41,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:41,021 INFO L93 Difference]: Finished difference Result 2057 states and 3021 transitions. [2020-10-28 13:00:41,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:00:41,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-10-28 13:00:41,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:41,032 INFO L225 Difference]: With dead ends: 2057 [2020-10-28 13:00:41,033 INFO L226 Difference]: Without dead ends: 1366 [2020-10-28 13:00:41,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:00:41,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2020-10-28 13:00:41,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1338. [2020-10-28 13:00:41,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-10-28 13:00:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1730 transitions. [2020-10-28 13:00:41,150 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1730 transitions. Word has length 137 [2020-10-28 13:00:41,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:41,150 INFO L481 AbstractCegarLoop]: Abstraction has 1338 states and 1730 transitions. [2020-10-28 13:00:41,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:00:41,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1730 transitions. [2020-10-28 13:00:41,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 13:00:41,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:41,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:00:41,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:00:41,158 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:41,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:41,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1591120017, now seen corresponding path program 1 times [2020-10-28 13:00:41,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:41,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569316308] [2020-10-28 13:00:41,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:41,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:41,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:41,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:45,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:45,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-28 13:00:45,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:00:45,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3902 [2020-10-28 13:00:45,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:45,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:45,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:00:45,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:00:45,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:00:45,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:00:45,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:45,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:45,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:45,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:45,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:45,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:00:45,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:45,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:45,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:45,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:45,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:00:45,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:45,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:45,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:45,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:45,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:00:45,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-28 13:00:45,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:45,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:45,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:45,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:00:45,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:46,552 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:00:46,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569316308] [2020-10-28 13:00:46,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:00:46,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:00:46,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305864897] [2020-10-28 13:00:46,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:00:46,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:46,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:00:46,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:00:46,555 INFO L87 Difference]: Start difference. First operand 1338 states and 1730 transitions. Second operand 7 states. [2020-10-28 13:00:57,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:57,585 INFO L93 Difference]: Finished difference Result 3009 states and 3816 transitions. [2020-10-28 13:00:57,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:00:57,593 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-28 13:00:57,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:57,604 INFO L225 Difference]: With dead ends: 3009 [2020-10-28 13:00:57,604 INFO L226 Difference]: Without dead ends: 1677 [2020-10-28 13:00:57,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:00:57,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2020-10-28 13:00:57,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1658. [2020-10-28 13:00:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-10-28 13:00:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2060 transitions. [2020-10-28 13:00:57,669 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2060 transitions. Word has length 258 [2020-10-28 13:00:57,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:57,670 INFO L481 AbstractCegarLoop]: Abstraction has 1658 states and 2060 transitions. [2020-10-28 13:00:57,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:00:57,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2060 transitions. [2020-10-28 13:00:57,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-28 13:00:57,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:57,679 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-10-28 13:00:57,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:00:57,680 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:57,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:57,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1831185082, now seen corresponding path program 1 times [2020-10-28 13:00:57,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:57,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822070491] [2020-10-28 13:00:57,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:57,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:57,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:00,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:00,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-28 13:01:00,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:01:00,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2274 [2020-10-28 13:01:00,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:00,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:01:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 13:01:00,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:00,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:00,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:00,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:00,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:00,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:00,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:01:00,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:00,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:00,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:00,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:00,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:00,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:01:00,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:00,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-28 13:01:00,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:00,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:01:00,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:01:01,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822070491] [2020-10-28 13:01:01,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:01,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:01:01,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861339465] [2020-10-28 13:01:01,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:01:01,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:01,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:01:01,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:01:01,183 INFO L87 Difference]: Start difference. First operand 1658 states and 2060 transitions. Second operand 5 states. [2020-10-28 13:01:09,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:09,342 INFO L93 Difference]: Finished difference Result 3935 states and 5069 transitions. [2020-10-28 13:01:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:01:09,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-10-28 13:01:09,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:09,361 INFO L225 Difference]: With dead ends: 3935 [2020-10-28 13:01:09,362 INFO L226 Difference]: Without dead ends: 2590 [2020-10-28 13:01:09,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 13:01:09,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2020-10-28 13:01:09,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2279. [2020-10-28 13:01:09,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2279 states. [2020-10-28 13:01:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 2809 transitions. [2020-10-28 13:01:09,443 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 2809 transitions. Word has length 332 [2020-10-28 13:01:09,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:09,444 INFO L481 AbstractCegarLoop]: Abstraction has 2279 states and 2809 transitions. [2020-10-28 13:01:09,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:01:09,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 2809 transitions. [2020-10-28 13:01:09,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-28 13:01:09,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:09,454 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:09,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:01:09,455 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:09,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:09,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1505465301, now seen corresponding path program 1 times [2020-10-28 13:01:09,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:09,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809669717] [2020-10-28 13:01:09,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:09,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:09,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:12,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:12,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-28 13:01:12,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:01:12,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2675 [2020-10-28 13:01:12,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:12,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:12,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:01:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:01:12,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:12,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:12,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:12,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:12,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:12,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:12,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:01:12,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:12,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:12,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:12,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:12,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:12,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:12,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:12,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:12,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:12,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:01:12,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:12,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-28 13:01:12,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:12,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:12,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:12,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:12,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:01:12,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:01:13,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:01:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:13,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:13,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:13,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:01:13,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:13,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 13:01:13,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:13,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:13,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:13,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:01:13,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:01:13,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:01:13,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809669717] [2020-10-28 13:01:13,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:13,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:01:13,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167515068] [2020-10-28 13:01:13,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:01:13,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:13,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:01:13,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:01:13,449 INFO L87 Difference]: Start difference. First operand 2279 states and 2809 transitions. Second operand 7 states. [2020-10-28 13:01:27,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:27,779 INFO L93 Difference]: Finished difference Result 5579 states and 7141 transitions. [2020-10-28 13:01:27,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:01:27,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 412 [2020-10-28 13:01:27,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:27,802 INFO L225 Difference]: With dead ends: 5579 [2020-10-28 13:01:27,802 INFO L226 Difference]: Without dead ends: 3613 [2020-10-28 13:01:27,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 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 13:01:27,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3613 states. [2020-10-28 13:01:27,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3613 to 3256. [2020-10-28 13:01:27,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3256 states. [2020-10-28 13:01:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3256 states to 3256 states and 3963 transitions. [2020-10-28 13:01:27,959 INFO L78 Accepts]: Start accepts. Automaton has 3256 states and 3963 transitions. Word has length 412 [2020-10-28 13:01:27,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:27,960 INFO L481 AbstractCegarLoop]: Abstraction has 3256 states and 3963 transitions. [2020-10-28 13:01:27,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:01:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3256 states and 3963 transitions. [2020-10-28 13:01:27,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-28 13:01:27,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:27,971 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:01:27,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:01:27,972 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:27,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:27,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1083897351, now seen corresponding path program 1 times [2020-10-28 13:01:27,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:27,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083455936] [2020-10-28 13:01:27,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:28,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:28,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:28,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:29,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:30,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:33,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:33,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-28 13:01:33,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:01:33,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-28 13:01:33,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:33,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:33,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:01:33,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:01:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-28 13:01:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:33,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:33,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:33,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:33,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:33,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:33,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:01:33,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:33,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:33,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:33,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:33,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:33,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:33,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:01:33,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:33,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 13:01:33,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:33,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:33,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:33,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:33,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:01:33,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:33,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:01:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:33,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:33,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:34,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:34,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:01:34,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:01:34,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-10-28 13:01:34,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:34,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:34,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:34,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:01:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:01:34,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:34,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-28 13:01:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:34,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:34,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:34,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:01:34,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:34,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 13:01:34,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:34,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:01:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:01:34,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:34,733 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 319 proven. 6 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-28 13:01:34,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083455936] [2020-10-28 13:01:34,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:34,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:01:34,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870575333] [2020-10-28 13:01:34,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:01:34,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:34,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:01:34,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:01:34,736 INFO L87 Difference]: Start difference. First operand 3256 states and 3963 transitions. Second operand 7 states. [2020-10-28 13:01:50,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:01:50,307 INFO L93 Difference]: Finished difference Result 8765 states and 10931 transitions. [2020-10-28 13:01:50,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:01:50,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 433 [2020-10-28 13:01:50,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:01:50,341 INFO L225 Difference]: With dead ends: 8765 [2020-10-28 13:01:50,341 INFO L226 Difference]: Without dead ends: 5182 [2020-10-28 13:01:50,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:01:50,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5182 states. [2020-10-28 13:01:50,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5182 to 4541. [2020-10-28 13:01:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4541 states. [2020-10-28 13:01:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 5249 transitions. [2020-10-28 13:01:50,501 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 5249 transitions. Word has length 433 [2020-10-28 13:01:50,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:01:50,502 INFO L481 AbstractCegarLoop]: Abstraction has 4541 states and 5249 transitions. [2020-10-28 13:01:50,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:01:50,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 5249 transitions. [2020-10-28 13:01:50,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-28 13:01:50,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:50,507 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:50,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:01:50,508 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:50,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:50,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1884836328, now seen corresponding path program 1 times [2020-10-28 13:01:50,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:50,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842405521] [2020-10-28 13:01:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:50,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:50,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:53,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:53,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-28 13:01:53,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:01:53,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3180 [2020-10-28 13:01:53,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:53,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:53,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:53,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:01:53,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:01:53,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:53,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:53,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:54,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:54,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:54,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:54,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:01:54,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:54,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:01:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:01:54,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:54,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:01:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:54,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:54,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:54,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:01:54,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:54,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-28 13:01:54,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:54,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:54,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:54,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:01:54,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:54,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:01:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:54,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:54,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:54,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:01:54,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:54,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-28 13:01:54,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:54,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:01:54,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:01:54,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:01:54,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:01:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:01:55,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842405521] [2020-10-28 13:01:55,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:01:55,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:01:55,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561310516] [2020-10-28 13:01:55,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:01:55,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:55,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:01:55,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:01:55,374 INFO L87 Difference]: Start difference. First operand 4541 states and 5249 transitions. Second operand 8 states. [2020-10-28 13:01:59,477 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 13:02:01,449 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:02:14,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:14,512 INFO L93 Difference]: Finished difference Result 11398 states and 13443 transitions. [2020-10-28 13:02:14,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 13:02:14,516 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 443 [2020-10-28 13:02:14,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:14,553 INFO L225 Difference]: With dead ends: 11398 [2020-10-28 13:02:14,554 INFO L226 Difference]: Without dead ends: 7170 [2020-10-28 13:02:14,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-28 13:02:14,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7170 states. [2020-10-28 13:02:14,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7170 to 6495. [2020-10-28 13:02:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6495 states. [2020-10-28 13:02:14,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6495 states to 6495 states and 7460 transitions. [2020-10-28 13:02:14,752 INFO L78 Accepts]: Start accepts. Automaton has 6495 states and 7460 transitions. Word has length 443 [2020-10-28 13:02:14,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:14,753 INFO L481 AbstractCegarLoop]: Abstraction has 6495 states and 7460 transitions. [2020-10-28 13:02:14,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:02:14,753 INFO L276 IsEmpty]: Start isEmpty. Operand 6495 states and 7460 transitions. [2020-10-28 13:02:14,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-10-28 13:02:14,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:14,759 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:14,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:02:14,759 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:14,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:14,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1077140080, now seen corresponding path program 1 times [2020-10-28 13:02:14,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:14,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524791473] [2020-10-28 13:02:14,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:14,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:15,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:15,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-10-28 13:02:15,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:15,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 846 [2020-10-28 13:02:15,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:15,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:02:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 13:02:15,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:15,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:15,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:15,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:15,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:15,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:15,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:02:15,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:15,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:15,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:15,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:16,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:16,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:16,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:02:16,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:16,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 13:02:16,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:16,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:16,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:16,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:16,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:16,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:16,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:02:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:16,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:16,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:16,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:02:16,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:16,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 13:02:16,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:16,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:16,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:02:16,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:02:16,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524791473] [2020-10-28 13:02:16,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:16,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:02:16,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129214212] [2020-10-28 13:02:16,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:02:16,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:16,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:02:16,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:02:16,633 INFO L87 Difference]: Start difference. First operand 6495 states and 7460 transitions. Second operand 5 states. [2020-10-28 13:02:18,742 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:02:26,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:26,642 INFO L93 Difference]: Finished difference Result 14978 states and 17674 transitions. [2020-10-28 13:02:26,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:02:26,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 455 [2020-10-28 13:02:26,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:26,696 INFO L225 Difference]: With dead ends: 14978 [2020-10-28 13:02:26,696 INFO L226 Difference]: Without dead ends: 8796 [2020-10-28 13:02:26,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:02:26,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8796 states. [2020-10-28 13:02:26,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8796 to 8781. [2020-10-28 13:02:26,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8781 states. [2020-10-28 13:02:26,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8781 states to 8781 states and 10362 transitions. [2020-10-28 13:02:26,951 INFO L78 Accepts]: Start accepts. Automaton has 8781 states and 10362 transitions. Word has length 455 [2020-10-28 13:02:26,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:26,952 INFO L481 AbstractCegarLoop]: Abstraction has 8781 states and 10362 transitions. [2020-10-28 13:02:26,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:02:26,952 INFO L276 IsEmpty]: Start isEmpty. Operand 8781 states and 10362 transitions. [2020-10-28 13:02:26,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-10-28 13:02:26,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:26,962 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:02:26,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:02:26,962 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:26,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:26,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1287243587, now seen corresponding path program 1 times [2020-10-28 13:02:26,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:26,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135690521] [2020-10-28 13:02:26,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:27,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:27,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:28,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:30,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:30,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 547 [2020-10-28 13:02:30,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:02:30,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3858 [2020-10-28 13:02:30,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:30,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:02:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:02:30,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:31,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:31,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:31,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:31,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:31,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:31,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:02:31,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:31,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:31,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:31,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:31,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:31,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:31,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:31,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:02:31,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:31,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 13:02:31,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:31,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:31,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:31,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:31,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:31,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:31,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:02:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:31,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:31,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:31,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:02:31,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:31,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:02:31,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:31,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:02:31,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:31,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:02:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:31,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:31,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:31,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:02:31,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:31,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:02:31,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:31,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:02:31,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 301 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:02:32,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135690521] [2020-10-28 13:02:32,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:32,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:02:32,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421460950] [2020-10-28 13:02:32,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:02:32,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:32,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:02:32,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:02:32,006 INFO L87 Difference]: Start difference. First operand 8781 states and 10362 transitions. Second operand 7 states. [2020-10-28 13:02:36,988 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:02:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:43,819 INFO L93 Difference]: Finished difference Result 20395 states and 24705 transitions. [2020-10-28 13:02:43,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:02:43,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 531 [2020-10-28 13:02:43,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:43,879 INFO L225 Difference]: With dead ends: 20395 [2020-10-28 13:02:43,879 INFO L226 Difference]: Without dead ends: 11927 [2020-10-28 13:02:43,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:02:43,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11927 states. [2020-10-28 13:02:44,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11927 to 10627. [2020-10-28 13:02:44,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10627 states. [2020-10-28 13:02:44,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10627 states to 10627 states and 12798 transitions. [2020-10-28 13:02:44,223 INFO L78 Accepts]: Start accepts. Automaton has 10627 states and 12798 transitions. Word has length 531 [2020-10-28 13:02:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:44,224 INFO L481 AbstractCegarLoop]: Abstraction has 10627 states and 12798 transitions. [2020-10-28 13:02:44,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:02:44,225 INFO L276 IsEmpty]: Start isEmpty. Operand 10627 states and 12798 transitions. [2020-10-28 13:02:44,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-28 13:02:44,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:44,234 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-28 13:02:44,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:02:44,234 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:44,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:44,235 INFO L82 PathProgramCache]: Analyzing trace with hash 929991761, now seen corresponding path program 1 times [2020-10-28 13:02:44,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:44,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213512505] [2020-10-28 13:02:44,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:44,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:45,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:46,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:47,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:47,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-28 13:02:47,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:02:47,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2866 [2020-10-28 13:02:47,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:47,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:47,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:47,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:02:47,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:02:47,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:47,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:47,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:47,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:47,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:47,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:47,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:02:47,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:47,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:47,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:47,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:47,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:47,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:47,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:02:47,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:47,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:02:47,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:47,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:47,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:47,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:47,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:47,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:47,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:02:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:47,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:47,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:47,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:02:47,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:47,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:02:47,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:47,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:02:47,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:47,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:02:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:47,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:48,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:48,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 13:02:48,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:48,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 13:02:48,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:48,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:48,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:48,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:48,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:02:48,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:48,279 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 313 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:02:48,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213512505] [2020-10-28 13:02:48,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:48,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:02:48,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362226623] [2020-10-28 13:02:48,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:02:48,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:48,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:02:48,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:02:48,282 INFO L87 Difference]: Start difference. First operand 10627 states and 12798 transitions. Second operand 7 states. [2020-10-28 13:02:50,941 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:03:00,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:00,039 INFO L93 Difference]: Finished difference Result 24239 states and 31089 transitions. [2020-10-28 13:03:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:03:00,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 537 [2020-10-28 13:03:00,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:00,128 INFO L225 Difference]: With dead ends: 24239 [2020-10-28 13:03:00,129 INFO L226 Difference]: Without dead ends: 13925 [2020-10-28 13:03:00,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:03:00,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13925 states. [2020-10-28 13:03:00,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13925 to 13490. [2020-10-28 13:03:00,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13490 states. [2020-10-28 13:03:00,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13490 states to 13490 states and 16163 transitions. [2020-10-28 13:03:00,720 INFO L78 Accepts]: Start accepts. Automaton has 13490 states and 16163 transitions. Word has length 537 [2020-10-28 13:03:00,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:00,721 INFO L481 AbstractCegarLoop]: Abstraction has 13490 states and 16163 transitions. [2020-10-28 13:03:00,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:03:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand 13490 states and 16163 transitions. [2020-10-28 13:03:00,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2020-10-28 13:03:00,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:00,735 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:03:00,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:03:00,736 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:00,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:00,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1827071861, now seen corresponding path program 1 times [2020-10-28 13:03:00,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:00,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365908717] [2020-10-28 13:03:00,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:01,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:01,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:04,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:04,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 633 [2020-10-28 13:03:04,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:04,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3680 [2020-10-28 13:03:04,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:04,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-28 13:03:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:03:04,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:04,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:04,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:04,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:04,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:04,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:04,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:03:04,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:04,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:04,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:04,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:04,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:04,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:04,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:04,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:04,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:04,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:03:04,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:04,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:03:04,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:04,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:04,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:04,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:04,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:04,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:05,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:03:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:05,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:05,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:05,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:03:05,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:05,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 13:03:05,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:05,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:05,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:05,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:05,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-28 13:03:05,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:05,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:03:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:05,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:05,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:05,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:03:05,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:05,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 13:03:05,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:05,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:05,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:05,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:05,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:03:05,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-28 13:03:05,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365908717] [2020-10-28 13:03:05,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:05,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:03:05,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356674400] [2020-10-28 13:03:05,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:05,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:05,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:05,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:05,858 INFO L87 Difference]: Start difference. First operand 13490 states and 16163 transitions. Second operand 7 states. [2020-10-28 13:03:08,775 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 13:03:10,413 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:03:22,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:22,781 INFO L93 Difference]: Finished difference Result 35723 states and 43886 transitions. [2020-10-28 13:03:22,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:03:22,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 617 [2020-10-28 13:03:22,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:22,859 INFO L225 Difference]: With dead ends: 35723 [2020-10-28 13:03:22,859 INFO L226 Difference]: Without dead ends: 22228 [2020-10-28 13:03:22,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:03:22,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22228 states. [2020-10-28 13:03:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22228 to 21589. [2020-10-28 13:03:23,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21589 states. [2020-10-28 13:03:23,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21589 states to 21589 states and 25574 transitions. [2020-10-28 13:03:23,376 INFO L78 Accepts]: Start accepts. Automaton has 21589 states and 25574 transitions. Word has length 617 [2020-10-28 13:03:23,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:23,377 INFO L481 AbstractCegarLoop]: Abstraction has 21589 states and 25574 transitions. [2020-10-28 13:03:23,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:03:23,377 INFO L276 IsEmpty]: Start isEmpty. Operand 21589 states and 25574 transitions. [2020-10-28 13:03:23,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2020-10-28 13:03:23,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:23,389 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:23,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:03:23,389 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:23,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:23,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1958494713, now seen corresponding path program 1 times [2020-10-28 13:03:23,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:23,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705433901] [2020-10-28 13:03:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:23,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:24,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:25,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:26,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:28,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:28,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 654 [2020-10-28 13:03:28,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:03:28,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-28 13:03:28,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:28,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:03:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:03:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-28 13:03:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:28,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:28,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:28,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:28,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:28,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:28,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:03:28,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:28,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:28,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:28,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:28,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:28,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:28,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:03:28,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 13:03:28,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:28,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:29,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:03:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:29,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:29,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:29,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:03:29,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:29,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:03:29,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:29,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:29,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:29,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:29,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:03:29,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:29,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:03:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:29,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:29,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:29,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:29,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 13:03:29,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:29,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 13:03:29,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:29,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:29,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:29,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:29,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 13:03:29,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:29,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2020-10-28 13:03:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:29,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:29,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:29,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:03:29,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:29,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 13:03:29,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:29,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:03:29,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 559 proven. 4 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-28 13:03:29,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705433901] [2020-10-28 13:03:29,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:29,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:03:29,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40436020] [2020-10-28 13:03:29,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:03:29,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:29,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:03:29,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:03:29,905 INFO L87 Difference]: Start difference. First operand 21589 states and 25574 transitions. Second operand 8 states. [2020-10-28 13:03:32,535 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:03:33,957 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:03:44,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:44,378 INFO L93 Difference]: Finished difference Result 52497 states and 63114 transitions. [2020-10-28 13:03:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 13:03:44,380 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 636 [2020-10-28 13:03:44,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:44,593 INFO L225 Difference]: With dead ends: 52497 [2020-10-28 13:03:44,593 INFO L226 Difference]: Without dead ends: 28729 [2020-10-28 13:03:44,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:03:44,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28729 states. [2020-10-28 13:03:45,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28729 to 26867. [2020-10-28 13:03:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26867 states. [2020-10-28 13:03:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26867 states to 26867 states and 31438 transitions. [2020-10-28 13:03:45,186 INFO L78 Accepts]: Start accepts. Automaton has 26867 states and 31438 transitions. Word has length 636 [2020-10-28 13:03:45,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:45,186 INFO L481 AbstractCegarLoop]: Abstraction has 26867 states and 31438 transitions. [2020-10-28 13:03:45,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:03:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 26867 states and 31438 transitions. [2020-10-28 13:03:45,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2020-10-28 13:03:45,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:45,197 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:03:45,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:03:45,198 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:45,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:45,198 INFO L82 PathProgramCache]: Analyzing trace with hash -688520942, now seen corresponding path program 1 times [2020-10-28 13:03:45,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:45,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798061439] [2020-10-28 13:03:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:45,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:45,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:47,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:48,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:48,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 663 [2020-10-28 13:03:48,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:03:48,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3146 [2020-10-28 13:03:48,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:48,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:48,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:03:48,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-28 13:03:48,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 13:03:48,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:48,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:48,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:48,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:48,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:48,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:48,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:03:48,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:48,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:48,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:48,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:48,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:48,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:48,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:48,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:48,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:48,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:03:48,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:48,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 13:03:48,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:48,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:48,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:48,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:48,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:03:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:49,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:49,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:49,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:03:49,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:49,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 13:03:49,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:49,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-28 13:03:49,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:49,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:03:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:49,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:49,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:49,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:49,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:03:49,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:49,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-28 13:03:49,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:49,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:49,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:49,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:49,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 13:03:49,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:49,847 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 158 proven. 3 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2020-10-28 13:03:49,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798061439] [2020-10-28 13:03:49,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:49,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:03:49,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292966978] [2020-10-28 13:03:49,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:03:49,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:49,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:03:49,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:03:49,857 INFO L87 Difference]: Start difference. First operand 26867 states and 31438 transitions. Second operand 6 states. [2020-10-28 13:03:52,482 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:04:06,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:06,127 INFO L93 Difference]: Finished difference Result 58967 states and 70128 transitions. [2020-10-28 13:04:06,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:04:06,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 647 [2020-10-28 13:04:06,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:06,251 INFO L225 Difference]: With dead ends: 58967 [2020-10-28 13:04:06,251 INFO L226 Difference]: Without dead ends: 31469 [2020-10-28 13:04:06,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:04:06,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31469 states. [2020-10-28 13:04:06,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31469 to 31158. [2020-10-28 13:04:06,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31158 states. [2020-10-28 13:04:06,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31158 states to 31158 states and 34442 transitions. [2020-10-28 13:04:06,919 INFO L78 Accepts]: Start accepts. Automaton has 31158 states and 34442 transitions. Word has length 647 [2020-10-28 13:04:06,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:06,919 INFO L481 AbstractCegarLoop]: Abstraction has 31158 states and 34442 transitions. [2020-10-28 13:04:06,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:04:06,919 INFO L276 IsEmpty]: Start isEmpty. Operand 31158 states and 34442 transitions.