/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=SHALLOWEST --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/Problem11_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:38:15,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:38:15,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:38:15,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:38:15,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:38:15,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:38:15,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:38:15,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:38:15,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:38:15,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:38:15,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:38:15,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:38:15,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:38:15,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:38:15,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:38:15,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:38:15,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:38:15,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:38:15,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:38:16,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:38:16,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:38:16,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:38:16,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:38:16,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:38:16,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:38:16,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:38:16,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:38:16,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:38:16,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:38:16,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:38:16,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:38:16,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:38:16,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:38:16,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:38:16,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:38:16,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:38:16,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:38:16,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:38:16,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:38:16,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:38:16,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:38:16,053 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 [2020-10-26 22:38:16,101 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:38:16,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:38:16,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:38:16,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:38:16,105 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:38:16,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:38:16,106 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:38:16,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:38:16,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:38:16,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:38:16,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:38:16,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:38:16,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:38:16,108 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:38:16,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:38:16,109 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:38:16,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:38:16,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:38:16,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:38:16,109 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:38:16,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:38:16,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:38:16,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:38:16,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:38:16,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:38:16,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:38:16,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:38:16,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:38:16,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:38:16,111 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:38:16,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:38:16,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:38:16,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:38:16,520 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:38:16,521 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:38:16,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label23.c [2020-10-26 22:38:16,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2652bd41c/f3bd6c00274448eb8061f2553c12a32f/FLAGe9aa0ab6e [2020-10-26 22:38:17,500 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:38:17,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label23.c [2020-10-26 22:38:17,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2652bd41c/f3bd6c00274448eb8061f2553c12a32f/FLAGe9aa0ab6e [2020-10-26 22:38:17,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2652bd41c/f3bd6c00274448eb8061f2553c12a32f [2020-10-26 22:38:17,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:38:17,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:38:17,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:38:17,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:38:17,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:38:17,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:38:17" (1/1) ... [2020-10-26 22:38:17,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b9d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:17, skipping insertion in model container [2020-10-26 22:38:17,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:38:17" (1/1) ... [2020-10-26 22:38:17,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:38:17,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:38:18,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:38:18,501 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:38:18,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:38:18,699 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:38:18,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:18 WrapperNode [2020-10-26 22:38:18,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:38:18,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:38:18,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:38:18,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:38:18,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:18" (1/1) ... [2020-10-26 22:38:18,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:18" (1/1) ... [2020-10-26 22:38:18,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:18" (1/1) ... [2020-10-26 22:38:18,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:18" (1/1) ... [2020-10-26 22:38:18,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:18" (1/1) ... [2020-10-26 22:38:18,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:18" (1/1) ... [2020-10-26 22:38:18,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:18" (1/1) ... [2020-10-26 22:38:18,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:38:18,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:38:18,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:38:18,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:38:18,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:18" (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 [2020-10-26 22:38:18,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:38:18,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:38:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:38:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:38:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:38:18,979 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:38:18,979 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:38:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:38:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:38:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:38:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:38:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:38:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:38:18,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:38:18,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:38:18,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:38:18,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:38:18,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:38:18,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:38:20,917 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:38:20,918 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:38:20,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:38:20 BoogieIcfgContainer [2020-10-26 22:38:20,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:38:20,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:38:20,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:38:20,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:38:20,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:38:17" (1/3) ... [2020-10-26 22:38:20,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e0bb90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:38:20, skipping insertion in model container [2020-10-26 22:38:20,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:18" (2/3) ... [2020-10-26 22:38:20,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e0bb90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:38:20, skipping insertion in model container [2020-10-26 22:38:20,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:38:20" (3/3) ... [2020-10-26 22:38:20,930 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label23.c [2020-10-26 22:38:20,990 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:38:20,997 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:38:21,011 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:38:21,043 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:38:21,043 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:38:21,043 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:38:21,044 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:38:21,044 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:38:21,044 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:38:21,044 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:38:21,044 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:38:21,071 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-26 22:38:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-26 22:38:21,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:21,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:38:21,083 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:21,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:21,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1180993152, now seen corresponding path program 1 times [2020-10-26 22:38:21,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:21,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560337784] [2020-10-26 22:38:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:21,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:21,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:21,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 22:38:21,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:21,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-26 22:38:21,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:21,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:38:21,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:38:21,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:38:21,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:38:22,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:22,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:22,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:22,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:22,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:22,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 22:38:22,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:22,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:22,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:22,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:38:22,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:38:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:38:22,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560337784] [2020-10-26 22:38:22,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:38:22,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:38:22,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606945393] [2020-10-26 22:38:22,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:38:22,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:22,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:38:22,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:38:22,337 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-26 22:38:25,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:25,136 INFO L93 Difference]: Finished difference Result 804 states and 1407 transitions. [2020-10-26 22:38:25,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:38:25,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-26 22:38:25,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:25,161 INFO L225 Difference]: With dead ends: 804 [2020-10-26 22:38:25,161 INFO L226 Difference]: Without dead ends: 444 [2020-10-26 22:38:25,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:38:25,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-26 22:38:25,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 430. [2020-10-26 22:38:25,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-26 22:38:25,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 646 transitions. [2020-10-26 22:38:25,279 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 646 transitions. Word has length 72 [2020-10-26 22:38:25,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:25,280 INFO L481 AbstractCegarLoop]: Abstraction has 430 states and 646 transitions. [2020-10-26 22:38:25,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:38:25,280 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 646 transitions. [2020-10-26 22:38:25,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-26 22:38:25,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:25,288 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:38:25,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:38:25,288 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:25,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:25,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1112722592, now seen corresponding path program 1 times [2020-10-26 22:38:25,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:25,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937408041] [2020-10-26 22:38:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:25,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:25,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:26,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:26,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 22:38:26,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:38:26,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1321 [2020-10-26 22:38:26,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:26,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:38:26,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:38:26,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:38:26,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:38:26,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:26,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:26,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:26,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:26,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:26,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 22:38:26,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:26,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:26,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:26,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:38:26,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:26,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:26,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:27,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:27,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 22:38:27,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:27,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 22:38:27,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:27,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 22:38:27,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:38:27,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937408041] [2020-10-26 22:38:27,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:38:27,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:38:27,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443435570] [2020-10-26 22:38:27,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:38:27,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:27,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:38:27,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:38:27,157 INFO L87 Difference]: Start difference. First operand 430 states and 646 transitions. Second operand 7 states. [2020-10-26 22:38:30,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:30,458 INFO L93 Difference]: Finished difference Result 1282 states and 2002 transitions. [2020-10-26 22:38:30,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:38:30,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-26 22:38:30,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:30,470 INFO L225 Difference]: With dead ends: 1282 [2020-10-26 22:38:30,470 INFO L226 Difference]: Without dead ends: 858 [2020-10-26 22:38:30,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:38:30,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-10-26 22:38:30,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 820. [2020-10-26 22:38:30,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-10-26 22:38:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1123 transitions. [2020-10-26 22:38:30,570 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1123 transitions. Word has length 142 [2020-10-26 22:38:30,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:30,571 INFO L481 AbstractCegarLoop]: Abstraction has 820 states and 1123 transitions. [2020-10-26 22:38:30,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:38:30,571 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1123 transitions. [2020-10-26 22:38:30,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-26 22:38:30,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:30,578 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:38:30,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:38:30,579 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:30,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:30,579 INFO L82 PathProgramCache]: Analyzing trace with hash 337498200, now seen corresponding path program 1 times [2020-10-26 22:38:30,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:30,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363318773] [2020-10-26 22:38:30,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:30,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:30,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:31,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:32,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:32,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 22:38:32,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:38:32,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1979 [2020-10-26 22:38:32,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:32,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:38:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:38:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 22:38:32,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:32,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:32,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:32,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:32,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:32,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:32,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:38:32,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:38:32,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:38:32,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:32,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:32,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:32,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:38:32,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:32,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-26 22:38:32,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:38:32,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:38:33,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363318773] [2020-10-26 22:38:33,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:38:33,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:38:33,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527944903] [2020-10-26 22:38:33,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:38:33,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:33,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:38:33,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:38:33,238 INFO L87 Difference]: Start difference. First operand 820 states and 1123 transitions. Second operand 7 states. [2020-10-26 22:38:36,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:36,055 INFO L93 Difference]: Finished difference Result 2039 states and 2754 transitions. [2020-10-26 22:38:36,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:38:36,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-26 22:38:36,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:36,067 INFO L225 Difference]: With dead ends: 2039 [2020-10-26 22:38:36,068 INFO L226 Difference]: Without dead ends: 1225 [2020-10-26 22:38:36,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:38:36,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2020-10-26 22:38:36,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1206. [2020-10-26 22:38:36,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1206 states. [2020-10-26 22:38:36,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1542 transitions. [2020-10-26 22:38:36,160 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1542 transitions. Word has length 146 [2020-10-26 22:38:36,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:36,161 INFO L481 AbstractCegarLoop]: Abstraction has 1206 states and 1542 transitions. [2020-10-26 22:38:36,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:38:36,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1542 transitions. [2020-10-26 22:38:36,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-26 22:38:36,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:36,173 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, 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] [2020-10-26 22:38:36,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:38:36,173 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:36,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:36,175 INFO L82 PathProgramCache]: Analyzing trace with hash -37833389, now seen corresponding path program 1 times [2020-10-26 22:38:36,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:36,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616523498] [2020-10-26 22:38:36,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:36,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:36,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:36,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-26 22:38:36,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:36,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-26 22:38:36,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:36,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:36,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:38:36,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 22:38:36,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:36,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:36,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:36,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:36,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:36,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:38:36,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:36,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:36,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:36,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:36,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:36,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:36,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:37,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:37,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:38:37,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:37,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-26 22:38:37,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:37,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:37,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:37,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:38:37,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:38:37,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616523498] [2020-10-26 22:38:37,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:38:37,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:38:37,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990359359] [2020-10-26 22:38:37,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:38:37,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:37,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:38:37,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:38:37,142 INFO L87 Difference]: Start difference. First operand 1206 states and 1542 transitions. Second operand 5 states. [2020-10-26 22:38:39,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:39,575 INFO L93 Difference]: Finished difference Result 2819 states and 3822 transitions. [2020-10-26 22:38:39,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:38:39,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-26 22:38:39,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:39,589 INFO L225 Difference]: With dead ends: 2819 [2020-10-26 22:38:39,589 INFO L226 Difference]: Without dead ends: 1997 [2020-10-26 22:38:39,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:38:39,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2020-10-26 22:38:39,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1993. [2020-10-26 22:38:39,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1993 states. [2020-10-26 22:38:39,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 2580 transitions. [2020-10-26 22:38:39,670 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 2580 transitions. Word has length 203 [2020-10-26 22:38:39,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:39,672 INFO L481 AbstractCegarLoop]: Abstraction has 1993 states and 2580 transitions. [2020-10-26 22:38:39,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:38:39,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 2580 transitions. [2020-10-26 22:38:39,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-26 22:38:39,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:39,680 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:38:39,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:38:39,680 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:39,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:39,681 INFO L82 PathProgramCache]: Analyzing trace with hash 149017794, now seen corresponding path program 1 times [2020-10-26 22:38:39,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:39,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517245916] [2020-10-26 22:38:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:39,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:39,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:40,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:41,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:42,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:42,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-26 22:38:42,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:38:42,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3046 [2020-10-26 22:38:42,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:42,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:38:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 22:38:42,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:42,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:42,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:42,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:42,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:42,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:42,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:38:42,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:42,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:42,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:42,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:42,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:42,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:43,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:43,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:43,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:38:43,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:43,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 22:38:43,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:38:43,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:43,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:38:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:43,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:43,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:43,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:38:43,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:43,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-26 22:38:43,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:38:43,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:38:43,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517245916] [2020-10-26 22:38:43,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:38:43,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:38:43,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773066957] [2020-10-26 22:38:43,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:38:43,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:43,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:38:43,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:38:43,545 INFO L87 Difference]: Start difference. First operand 1993 states and 2580 transitions. Second operand 7 states. [2020-10-26 22:38:46,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:46,705 INFO L93 Difference]: Finished difference Result 4248 states and 5865 transitions. [2020-10-26 22:38:46,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:38:46,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 268 [2020-10-26 22:38:46,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:46,732 INFO L225 Difference]: With dead ends: 4248 [2020-10-26 22:38:46,732 INFO L226 Difference]: Without dead ends: 2639 [2020-10-26 22:38:46,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:38:46,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2020-10-26 22:38:46,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2591. [2020-10-26 22:38:46,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2591 states. [2020-10-26 22:38:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 3415 transitions. [2020-10-26 22:38:46,843 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 3415 transitions. Word has length 268 [2020-10-26 22:38:46,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:46,844 INFO L481 AbstractCegarLoop]: Abstraction has 2591 states and 3415 transitions. [2020-10-26 22:38:46,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:38:46,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 3415 transitions. [2020-10-26 22:38:46,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-26 22:38:46,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:46,852 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:38:46,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:38:46,852 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:46,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:46,853 INFO L82 PathProgramCache]: Analyzing trace with hash -756749069, now seen corresponding path program 1 times [2020-10-26 22:38:46,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:46,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314009533] [2020-10-26 22:38:46,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:46,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:47,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:49,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:49,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 22:38:49,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:38:49,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2227 [2020-10-26 22:38:49,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:38:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:38:49,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:49,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:49,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:49,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:49,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:49,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:49,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:38:49,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:49,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:49,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:49,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:49,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:49,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:38:49,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:49,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 22:38:49,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:49,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:49,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:49,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:38:49,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:49,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:38:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:49,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:49,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:49,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 22:38:49,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:49,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-26 22:38:49,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 22:38:49,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:49,872 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:38:49,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314009533] [2020-10-26 22:38:49,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:38:49,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:38:49,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188135744] [2020-10-26 22:38:49,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:38:49,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:49,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:38:49,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:38:49,875 INFO L87 Difference]: Start difference. First operand 2591 states and 3415 transitions. Second operand 7 states. [2020-10-26 22:38:52,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:52,987 INFO L93 Difference]: Finished difference Result 5453 states and 7422 transitions. [2020-10-26 22:38:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:38:52,988 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-26 22:38:52,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:53,008 INFO L225 Difference]: With dead ends: 5453 [2020-10-26 22:38:53,010 INFO L226 Difference]: Without dead ends: 3246 [2020-10-26 22:38:53,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:38:53,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2020-10-26 22:38:53,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 3221. [2020-10-26 22:38:53,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3221 states. [2020-10-26 22:38:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 4259 transitions. [2020-10-26 22:38:53,131 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 4259 transitions. Word has length 273 [2020-10-26 22:38:53,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:53,132 INFO L481 AbstractCegarLoop]: Abstraction has 3221 states and 4259 transitions. [2020-10-26 22:38:53,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:38:53,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 4259 transitions. [2020-10-26 22:38:53,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-26 22:38:53,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:53,141 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:38:53,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:38:53,141 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:53,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:53,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1440484319, now seen corresponding path program 1 times [2020-10-26 22:38:53,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:53,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017501623] [2020-10-26 22:38:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:53,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:53,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:54,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:57,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:58,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:58,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-26 22:38:58,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:38:58,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-26 22:38:58,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:58,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:38:58,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:38:58,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 22:38:58,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:38:58,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:58,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:58,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:58,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:58,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:58,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 22:38:58,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:58,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:58,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:58,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:38:58,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:58,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:58,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:58,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:58,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:58,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:38:58,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:38:58,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-26 22:38:58,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:38:58,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:59,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:38:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:59,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:59,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:59,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:38:59,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:59,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 22:38:59,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:59,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:59,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 22:38:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:59,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 128 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:38:59,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017501623] [2020-10-26 22:38:59,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:38:59,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:38:59,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175682554] [2020-10-26 22:38:59,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:38:59,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:59,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:38:59,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:38:59,455 INFO L87 Difference]: Start difference. First operand 3221 states and 4259 transitions. Second operand 7 states. [2020-10-26 22:39:02,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:02,432 INFO L93 Difference]: Finished difference Result 7617 states and 10618 transitions. [2020-10-26 22:39:02,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:39:02,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-10-26 22:39:02,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:02,469 INFO L225 Difference]: With dead ends: 7617 [2020-10-26 22:39:02,470 INFO L226 Difference]: Without dead ends: 4780 [2020-10-26 22:39:02,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:39:02,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4780 states. [2020-10-26 22:39:02,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4780 to 4769. [2020-10-26 22:39:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4769 states. [2020-10-26 22:39:02,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4769 states to 4769 states and 6260 transitions. [2020-10-26 22:39:02,683 INFO L78 Accepts]: Start accepts. Automaton has 4769 states and 6260 transitions. Word has length 283 [2020-10-26 22:39:02,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:02,683 INFO L481 AbstractCegarLoop]: Abstraction has 4769 states and 6260 transitions. [2020-10-26 22:39:02,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:02,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4769 states and 6260 transitions. [2020-10-26 22:39:02,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-26 22:39:02,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:02,695 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:39:02,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:39:02,695 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:02,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:02,696 INFO L82 PathProgramCache]: Analyzing trace with hash -492682177, now seen corresponding path program 1 times [2020-10-26 22:39:02,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:02,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311650486] [2020-10-26 22:39:02,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:02,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:03,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:04,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:04,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-26 22:39:04,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:04,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1777 [2020-10-26 22:39:04,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:04,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:04,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:39:04,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 22:39:04,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:04,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:04,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:04,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:04,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:04,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:04,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:39:04,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:04,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:04,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:04,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:04,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:04,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:04,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:04,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:04,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:39:04,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:04,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 22:39:04,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:04,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:39:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:04,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:39:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:04,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:05,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:05,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:39:05,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:05,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-26 22:39:05,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:39:05,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 235 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:39:05,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311650486] [2020-10-26 22:39:05,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:05,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:05,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613086806] [2020-10-26 22:39:05,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:05,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:05,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:05,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:05,540 INFO L87 Difference]: Start difference. First operand 4769 states and 6260 transitions. Second operand 7 states. [2020-10-26 22:39:08,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:08,630 INFO L93 Difference]: Finished difference Result 9361 states and 12396 transitions. [2020-10-26 22:39:08,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:39:08,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-10-26 22:39:08,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:08,658 INFO L225 Difference]: With dead ends: 9361 [2020-10-26 22:39:08,659 INFO L226 Difference]: Without dead ends: 4976 [2020-10-26 22:39:08,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:39:08,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2020-10-26 22:39:08,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4967. [2020-10-26 22:39:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4967 states. [2020-10-26 22:39:08,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4967 states to 4967 states and 6502 transitions. [2020-10-26 22:39:08,830 INFO L78 Accepts]: Start accepts. Automaton has 4967 states and 6502 transitions. Word has length 298 [2020-10-26 22:39:08,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:08,831 INFO L481 AbstractCegarLoop]: Abstraction has 4967 states and 6502 transitions. [2020-10-26 22:39:08,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:08,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4967 states and 6502 transitions. [2020-10-26 22:39:08,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-26 22:39:08,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:08,841 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, 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] [2020-10-26 22:39:08,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:39:08,842 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:08,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:08,842 INFO L82 PathProgramCache]: Analyzing trace with hash 2057297173, now seen corresponding path program 1 times [2020-10-26 22:39:08,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:08,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209703340] [2020-10-26 22:39:08,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:08,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:09,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:10,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:10,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-26 22:39:10,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:10,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1786 [2020-10-26 22:39:10,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:10,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:10,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:39:10,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-26 22:39:10,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:10,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:10,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:10,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:10,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:10,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:39:10,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:10,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:10,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:10,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:10,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:10,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:39:10,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:10,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 22:39:10,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:39:10,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:11,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:39:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:11,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:11,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:11,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 22:39:11,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:11,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-26 22:39:11,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:11,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:11,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:11,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 22:39:11,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:11,371 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:39:11,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209703340] [2020-10-26 22:39:11,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:11,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:11,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808519104] [2020-10-26 22:39:11,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:11,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:11,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:11,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:11,374 INFO L87 Difference]: Start difference. First operand 4967 states and 6502 transitions. Second operand 7 states. [2020-10-26 22:39:14,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:14,556 INFO L93 Difference]: Finished difference Result 13006 states and 17459 transitions. [2020-10-26 22:39:14,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:39:14,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 302 [2020-10-26 22:39:14,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:14,596 INFO L225 Difference]: With dead ends: 13006 [2020-10-26 22:39:14,596 INFO L226 Difference]: Without dead ends: 8423 [2020-10-26 22:39:14,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:39:14,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8423 states. [2020-10-26 22:39:14,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8423 to 8411. [2020-10-26 22:39:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8411 states. [2020-10-26 22:39:14,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8411 states to 8411 states and 11159 transitions. [2020-10-26 22:39:14,853 INFO L78 Accepts]: Start accepts. Automaton has 8411 states and 11159 transitions. Word has length 302 [2020-10-26 22:39:14,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:14,854 INFO L481 AbstractCegarLoop]: Abstraction has 8411 states and 11159 transitions. [2020-10-26 22:39:14,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:14,854 INFO L276 IsEmpty]: Start isEmpty. Operand 8411 states and 11159 transitions. [2020-10-26 22:39:14,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-26 22:39:14,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:14,866 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:39:14,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:39:14,867 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:14,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:14,867 INFO L82 PathProgramCache]: Analyzing trace with hash 862568363, now seen corresponding path program 1 times [2020-10-26 22:39:14,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:14,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529994943] [2020-10-26 22:39:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:14,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:15,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:16,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:16,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-26 22:39:16,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:16,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1411 [2020-10-26 22:39:16,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 22:39:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 22:39:16,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:16,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:16,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:16,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:16,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:16,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:16,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:39:16,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:16,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:16,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:16,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:16,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:16,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:16,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:16,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:16,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:39:16,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:16,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 22:39:16,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:16,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:16,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:16,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 22:39:16,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:39:16,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:39:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:16,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:17,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:17,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:39:17,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:17,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-26 22:39:17,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:17,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:17,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:17,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:39:17,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:17,307 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 235 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:39:17,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529994943] [2020-10-26 22:39:17,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:17,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:17,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597140571] [2020-10-26 22:39:17,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:17,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:17,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:17,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:17,311 INFO L87 Difference]: Start difference. First operand 8411 states and 11159 transitions. Second operand 7 states. [2020-10-26 22:39:20,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:20,167 INFO L93 Difference]: Finished difference Result 18741 states and 24813 transitions. [2020-10-26 22:39:20,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:39:20,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-10-26 22:39:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:20,210 INFO L225 Difference]: With dead ends: 18741 [2020-10-26 22:39:20,211 INFO L226 Difference]: Without dead ends: 10714 [2020-10-26 22:39:20,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:39:20,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10714 states. [2020-10-26 22:39:20,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10714 to 10502. [2020-10-26 22:39:20,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10502 states. [2020-10-26 22:39:20,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10502 states to 10502 states and 13561 transitions. [2020-10-26 22:39:20,513 INFO L78 Accepts]: Start accepts. Automaton has 10502 states and 13561 transitions. Word has length 308 [2020-10-26 22:39:20,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:20,514 INFO L481 AbstractCegarLoop]: Abstraction has 10502 states and 13561 transitions. [2020-10-26 22:39:20,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:20,514 INFO L276 IsEmpty]: Start isEmpty. Operand 10502 states and 13561 transitions. [2020-10-26 22:39:20,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-26 22:39:20,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:20,526 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:39:20,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 22:39:20,526 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:20,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:20,527 INFO L82 PathProgramCache]: Analyzing trace with hash -297586596, now seen corresponding path program 1 times [2020-10-26 22:39:20,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:20,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048075378] [2020-10-26 22:39:20,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:20,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:20,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:22,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:22,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-26 22:39:22,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:22,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1452 [2020-10-26 22:39:22,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:22,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:39:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 22:39:22,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:22,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:22,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:22,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:22,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:22,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:22,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:39:22,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:22,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:22,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:22,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:22,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:22,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:22,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:22,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:39:22,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:22,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 22:39:22,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:39:22,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:22,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:39:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:22,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:22,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:22,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:39:22,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:22,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-26 22:39:22,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:39:22,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 235 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:39:22,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048075378] [2020-10-26 22:39:22,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:22,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:22,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572347081] [2020-10-26 22:39:22,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:22,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:22,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:22,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:22,722 INFO L87 Difference]: Start difference. First operand 10502 states and 13561 transitions. Second operand 7 states. [2020-10-26 22:39:27,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:27,222 INFO L93 Difference]: Finished difference Result 19888 states and 25863 transitions. [2020-10-26 22:39:27,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:39:27,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2020-10-26 22:39:27,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:27,281 INFO L225 Difference]: With dead ends: 19888 [2020-10-26 22:39:27,281 INFO L226 Difference]: Without dead ends: 12456 [2020-10-26 22:39:27,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:39:27,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12456 states. [2020-10-26 22:39:27,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12456 to 12245. [2020-10-26 22:39:27,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12245 states. [2020-10-26 22:39:27,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12245 states to 12245 states and 15609 transitions. [2020-10-26 22:39:27,606 INFO L78 Accepts]: Start accepts. Automaton has 12245 states and 15609 transitions. Word has length 313 [2020-10-26 22:39:27,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:27,607 INFO L481 AbstractCegarLoop]: Abstraction has 12245 states and 15609 transitions. [2020-10-26 22:39:27,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:27,607 INFO L276 IsEmpty]: Start isEmpty. Operand 12245 states and 15609 transitions. [2020-10-26 22:39:27,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-26 22:39:27,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:27,620 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:39:27,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 22:39:27,620 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:27,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:27,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1921434779, now seen corresponding path program 1 times [2020-10-26 22:39:27,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:27,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832403494] [2020-10-26 22:39:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:27,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:29,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:29,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-26 22:39:29,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:29,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2144 [2020-10-26 22:39:29,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:29,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:39:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 22:39:29,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:29,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:29,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:29,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:29,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:29,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:29,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:39:29,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:29,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:29,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:30,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:30,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:30,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:39:30,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-26 22:39:30,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:39:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:30,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:39:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:30,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:30,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:30,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 22:39:30,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:30,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 22:39:30,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 22:39:30,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:30,596 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 236 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:39:30,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832403494] [2020-10-26 22:39:30,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:30,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:30,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145005700] [2020-10-26 22:39:30,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:30,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:30,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:30,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:30,598 INFO L87 Difference]: Start difference. First operand 12245 states and 15609 transitions. Second operand 7 states. [2020-10-26 22:39:34,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:34,742 INFO L93 Difference]: Finished difference Result 23710 states and 30418 transitions. [2020-10-26 22:39:34,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:39:34,742 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 316 [2020-10-26 22:39:34,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:34,779 INFO L225 Difference]: With dead ends: 23710 [2020-10-26 22:39:34,780 INFO L226 Difference]: Without dead ends: 11849 [2020-10-26 22:39:34,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:39:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11849 states. [2020-10-26 22:39:35,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11849 to 11827. [2020-10-26 22:39:35,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11827 states. [2020-10-26 22:39:35,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11827 states to 11827 states and 14525 transitions. [2020-10-26 22:39:35,052 INFO L78 Accepts]: Start accepts. Automaton has 11827 states and 14525 transitions. Word has length 316 [2020-10-26 22:39:35,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:35,052 INFO L481 AbstractCegarLoop]: Abstraction has 11827 states and 14525 transitions. [2020-10-26 22:39:35,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:35,052 INFO L276 IsEmpty]: Start isEmpty. Operand 11827 states and 14525 transitions. [2020-10-26 22:39:35,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-26 22:39:35,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:35,063 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:39:35,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 22:39:35,064 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:35,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:35,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1559515984, now seen corresponding path program 1 times [2020-10-26 22:39:35,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:35,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609397499] [2020-10-26 22:39:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:35,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:35,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:36,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:36,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-26 22:39:36,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:36,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1528 [2020-10-26 22:39:36,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-26 22:39:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 22:39:36,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:36,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:36,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:36,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:36,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:36,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:36,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:39:36,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:36,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:36,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:36,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:36,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:36,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:39:36,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:36,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 22:39:36,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:36,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:36,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:36,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:36,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:36,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:39:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:36,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:37,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:37,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 22:39:37,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:37,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-26 22:39:37,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:39:37,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-26 22:39:37,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609397499] [2020-10-26 22:39:37,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:37,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:39:37,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045981842] [2020-10-26 22:39:37,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:39:37,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:37,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:39:37,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:39:37,239 INFO L87 Difference]: Start difference. First operand 11827 states and 14525 transitions. Second operand 5 states. [2020-10-26 22:39:39,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:39,110 INFO L93 Difference]: Finished difference Result 20424 states and 25391 transitions. [2020-10-26 22:39:39,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:39:39,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-10-26 22:39:39,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:39,145 INFO L225 Difference]: With dead ends: 20424 [2020-10-26 22:39:39,145 INFO L226 Difference]: Without dead ends: 11839 [2020-10-26 22:39:39,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:39:39,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11839 states. [2020-10-26 22:39:39,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11839 to 11825. [2020-10-26 22:39:39,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11825 states. [2020-10-26 22:39:39,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11825 states to 11825 states and 14492 transitions. [2020-10-26 22:39:39,492 INFO L78 Accepts]: Start accepts. Automaton has 11825 states and 14492 transitions. Word has length 318 [2020-10-26 22:39:39,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:39,493 INFO L481 AbstractCegarLoop]: Abstraction has 11825 states and 14492 transitions. [2020-10-26 22:39:39,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:39:39,493 INFO L276 IsEmpty]: Start isEmpty. Operand 11825 states and 14492 transitions. [2020-10-26 22:39:39,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-26 22:39:39,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:39,505 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:39:39,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 22:39:39,506 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:39,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:39,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1602124903, now seen corresponding path program 1 times [2020-10-26 22:39:39,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:39,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885836858] [2020-10-26 22:39:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:39,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:39,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:41,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:41,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-26 22:39:41,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:41,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1873 [2020-10-26 22:39:41,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:39:41,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 22:39:41,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:41,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:41,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:41,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:41,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:41,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:41,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:39:41,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:41,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:41,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:41,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:41,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:41,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:41,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:39:41,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:41,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 22:39:41,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:41,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:41,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:41,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:39:41,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:41,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:39:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:42,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:42,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:39:42,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:42,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 22:39:42,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:42,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:42,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:42,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:39:42,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 235 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:39:42,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885836858] [2020-10-26 22:39:42,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:42,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:42,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651955671] [2020-10-26 22:39:42,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:42,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:42,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:42,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:42,181 INFO L87 Difference]: Start difference. First operand 11825 states and 14492 transitions. Second operand 7 states. [2020-10-26 22:39:45,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:45,309 INFO L93 Difference]: Finished difference Result 21589 states and 26730 transitions. [2020-10-26 22:39:45,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:39:45,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-26 22:39:45,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:45,353 INFO L225 Difference]: With dead ends: 21589 [2020-10-26 22:39:45,354 INFO L226 Difference]: Without dead ends: 13020 [2020-10-26 22:39:45,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:39:45,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13020 states. [2020-10-26 22:39:45,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13020 to 12409. [2020-10-26 22:39:45,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12409 states. [2020-10-26 22:39:45,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12409 states to 12409 states and 15211 transitions. [2020-10-26 22:39:45,622 INFO L78 Accepts]: Start accepts. Automaton has 12409 states and 15211 transitions. Word has length 329 [2020-10-26 22:39:45,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:45,623 INFO L481 AbstractCegarLoop]: Abstraction has 12409 states and 15211 transitions. [2020-10-26 22:39:45,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:45,623 INFO L276 IsEmpty]: Start isEmpty. Operand 12409 states and 15211 transitions. [2020-10-26 22:39:45,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-26 22:39:45,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:45,638 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:39:45,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 22:39:45,638 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:45,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:45,639 INFO L82 PathProgramCache]: Analyzing trace with hash -553964062, now seen corresponding path program 1 times [2020-10-26 22:39:45,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:45,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349567538] [2020-10-26 22:39:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:45,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:45,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:46,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:47,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:47,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-26 22:39:47,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:39:47,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2258 [2020-10-26 22:39:47,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:39:47,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:39:47,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 347 [2020-10-26 22:39:47,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:48,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:48,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:48,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:48,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:48,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:48,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:39:48,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:39:48,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:48,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:48,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:48,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:48,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:39:48,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:48,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-26 22:39:48,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:48,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:39:48,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:48,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:39:48,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:48,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:39:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:48,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:48,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:48,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-26 22:39:48,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:48,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-26 22:39:48,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:48,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:48,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:48,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 22:39:48,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:48,854 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 6 proven. 124 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-26 22:39:48,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349567538] [2020-10-26 22:39:48,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:48,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:39:48,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412698887] [2020-10-26 22:39:48,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:39:48,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:48,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:39:48,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:39:48,857 INFO L87 Difference]: Start difference. First operand 12409 states and 15211 transitions. Second operand 8 states. [2020-10-26 22:39:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:53,181 INFO L93 Difference]: Finished difference Result 28181 states and 35421 transitions. [2020-10-26 22:39:53,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:39:53,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 342 [2020-10-26 22:39:53,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:53,235 INFO L225 Difference]: With dead ends: 28181 [2020-10-26 22:39:53,235 INFO L226 Difference]: Without dead ends: 19220 [2020-10-26 22:39:53,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:39:53,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19220 states. [2020-10-26 22:39:53,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19220 to 19143. [2020-10-26 22:39:53,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19143 states. [2020-10-26 22:39:53,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19143 states to 19143 states and 23232 transitions. [2020-10-26 22:39:53,666 INFO L78 Accepts]: Start accepts. Automaton has 19143 states and 23232 transitions. Word has length 342 [2020-10-26 22:39:53,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:53,667 INFO L481 AbstractCegarLoop]: Abstraction has 19143 states and 23232 transitions. [2020-10-26 22:39:53,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:39:53,667 INFO L276 IsEmpty]: Start isEmpty. Operand 19143 states and 23232 transitions. [2020-10-26 22:39:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-26 22:39:53,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:53,683 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, 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, 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] [2020-10-26 22:39:53,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 22:39:53,683 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:53,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:53,684 INFO L82 PathProgramCache]: Analyzing trace with hash -852381354, now seen corresponding path program 1 times [2020-10-26 22:39:53,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:53,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270632562] [2020-10-26 22:39:53,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:53,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:54,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:54,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-26 22:39:54,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:54,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 905 [2020-10-26 22:39:54,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-26 22:39:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:39:54,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:54,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:54,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:54,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:54,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:54,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:54,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:39:54,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:54,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:54,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:54,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:54,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:54,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:54,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:54,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:54,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:39:54,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:54,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 22:39:54,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:54,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:54,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:54,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:54,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:54,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:39:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:54,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:54,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:54,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:39:54,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:54,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 22:39:54,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:39:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:39:54,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:55,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:39:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:55,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:55,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:55,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-26 22:39:55,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:55,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 22:39:55,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:55,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:55,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:55,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:39:55,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:55,264 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 195 proven. 3 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2020-10-26 22:39:55,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270632562] [2020-10-26 22:39:55,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:39:55,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:39:55,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678422410] [2020-10-26 22:39:55,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:39:55,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:55,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:39:55,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:39:55,269 INFO L87 Difference]: Start difference. First operand 19143 states and 23232 transitions. Second operand 5 states. [2020-10-26 22:39:58,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:58,400 INFO L93 Difference]: Finished difference Result 39808 states and 48530 transitions. [2020-10-26 22:39:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:39:58,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 376 [2020-10-26 22:39:58,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:58,460 INFO L225 Difference]: With dead ends: 39808 [2020-10-26 22:39:58,461 INFO L226 Difference]: Without dead ends: 21049 [2020-10-26 22:39:58,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:39:58,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21049 states. [2020-10-26 22:39:58,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21049 to 21025. [2020-10-26 22:39:58,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21025 states. [2020-10-26 22:39:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21025 states to 21025 states and 25356 transitions. [2020-10-26 22:39:58,932 INFO L78 Accepts]: Start accepts. Automaton has 21025 states and 25356 transitions. Word has length 376 [2020-10-26 22:39:58,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:58,933 INFO L481 AbstractCegarLoop]: Abstraction has 21025 states and 25356 transitions. [2020-10-26 22:39:58,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:39:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 21025 states and 25356 transitions. [2020-10-26 22:39:58,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-26 22:39:58,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:58,953 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, 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, 2, 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] [2020-10-26 22:39:58,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 22:39:58,953 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:58,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:58,953 INFO L82 PathProgramCache]: Analyzing trace with hash 2027208364, now seen corresponding path program 1 times [2020-10-26 22:39:58,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:58,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229275432] [2020-10-26 22:39:58,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:59,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:59,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:01,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:01,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-26 22:40:01,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:40:01,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2664 [2020-10-26 22:40:01,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:01,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:01,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-26 22:40:01,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 22:40:01,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:01,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:01,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:01,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:01,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:01,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:01,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:40:01,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:01,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:01,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:01,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:01,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:01,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:01,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:01,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:01,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:40:01,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:01,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 22:40:01,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:01,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:01,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:01,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:40:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:01,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:02,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:02,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:40:02,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:02,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 22:40:02,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:40:02,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:02,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:40:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:02,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:02,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:02,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 22:40:02,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:02,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 22:40:02,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 22:40:02,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:02,573 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 388 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-26 22:40:02,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229275432] [2020-10-26 22:40:02,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:02,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:02,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667838463] [2020-10-26 22:40:02,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:02,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:02,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:02,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:02,575 INFO L87 Difference]: Start difference. First operand 21025 states and 25356 transitions. Second operand 7 states. [2020-10-26 22:40:06,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:06,245 INFO L93 Difference]: Finished difference Result 39604 states and 48340 transitions. [2020-10-26 22:40:06,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:40:06,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 397 [2020-10-26 22:40:06,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:06,290 INFO L225 Difference]: With dead ends: 39604 [2020-10-26 22:40:06,291 INFO L226 Difference]: Without dead ends: 22213 [2020-10-26 22:40:06,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:40:06,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22213 states. [2020-10-26 22:40:06,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22213 to 22177. [2020-10-26 22:40:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22177 states. [2020-10-26 22:40:06,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22177 states to 22177 states and 26768 transitions. [2020-10-26 22:40:06,787 INFO L78 Accepts]: Start accepts. Automaton has 22177 states and 26768 transitions. Word has length 397 [2020-10-26 22:40:06,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:06,788 INFO L481 AbstractCegarLoop]: Abstraction has 22177 states and 26768 transitions. [2020-10-26 22:40:06,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:06,788 INFO L276 IsEmpty]: Start isEmpty. Operand 22177 states and 26768 transitions. [2020-10-26 22:40:06,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-26 22:40:06,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:06,817 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, 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, 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] [2020-10-26 22:40:06,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 22:40:06,818 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:06,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:06,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1100423909, now seen corresponding path program 1 times [2020-10-26 22:40:06,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:06,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686703934] [2020-10-26 22:40:06,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:06,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:07,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:07,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:08,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:10,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:10,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 464 [2020-10-26 22:40:10,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:40:10,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3232 [2020-10-26 22:40:10,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:40:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:40:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 320 [2020-10-26 22:40:10,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:10,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:10,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:10,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:10,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:10,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:10,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:40:10,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:10,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:10,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:10,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:10,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:10,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:10,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:10,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:10,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:40:10,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:10,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 22:40:10,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:10,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:10,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:10,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:40:10,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:10,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:40:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:10,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:10,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:10,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:40:10,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:10,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 22:40:10,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:10,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:10,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:10,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-26 22:40:10,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:10,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:40:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:10,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:10,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:10,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 22:40:10,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:10,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 22:40:10,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 22:40:10,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 291 proven. 229 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 22:40:11,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686703934] [2020-10-26 22:40:11,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:11,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:11,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629149198] [2020-10-26 22:40:11,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:11,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:11,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:11,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:11,024 INFO L87 Difference]: Start difference. First operand 22177 states and 26768 transitions. Second operand 7 states. [2020-10-26 22:40:13,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:13,700 INFO L93 Difference]: Finished difference Result 40752 states and 50702 transitions. [2020-10-26 22:40:13,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:40:13,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 448 [2020-10-26 22:40:13,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:13,770 INFO L225 Difference]: With dead ends: 40752 [2020-10-26 22:40:13,771 INFO L226 Difference]: Without dead ends: 22209 [2020-10-26 22:40:13,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:40:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22209 states. [2020-10-26 22:40:14,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22209 to 21407. [2020-10-26 22:40:14,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21407 states. [2020-10-26 22:40:14,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21407 states to 21407 states and 25276 transitions. [2020-10-26 22:40:14,302 INFO L78 Accepts]: Start accepts. Automaton has 21407 states and 25276 transitions. Word has length 448 [2020-10-26 22:40:14,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:14,304 INFO L481 AbstractCegarLoop]: Abstraction has 21407 states and 25276 transitions. [2020-10-26 22:40:14,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 21407 states and 25276 transitions. [2020-10-26 22:40:14,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2020-10-26 22:40:14,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:14,344 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:40:14,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 22:40:14,345 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:14,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:14,345 INFO L82 PathProgramCache]: Analyzing trace with hash 510379072, now seen corresponding path program 1 times [2020-10-26 22:40:14,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:14,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807902012] [2020-10-26 22:40:14,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:14,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:15,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:15,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 527 [2020-10-26 22:40:15,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:15,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 743 [2020-10-26 22:40:15,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 452 [2020-10-26 22:40:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 22:40:15,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:15,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:15,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:15,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:15,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:15,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:15,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:40:15,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:15,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:15,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:15,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:15,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:15,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:15,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:40:15,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:15,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 22:40:15,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:15,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:15,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:15,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:15,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-26 22:40:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:15,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:15,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:15,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-26 22:40:15,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:15,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 22:40:15,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:15,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:15,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:15,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:15,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:15,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-26 22:40:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:15,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:15,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:15,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 22:40:15,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:15,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 22:40:15,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:15,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:15,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:15,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-26 22:40:15,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 195 proven. 3 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2020-10-26 22:40:16,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807902012] [2020-10-26 22:40:16,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:16,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:40:16,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184449191] [2020-10-26 22:40:16,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:40:16,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:16,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:40:16,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:40:16,062 INFO L87 Difference]: Start difference. First operand 21407 states and 25276 transitions. Second operand 5 states. [2020-10-26 22:40:18,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:18,557 INFO L93 Difference]: Finished difference Result 23712 states and 28005 transitions. [2020-10-26 22:40:18,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:40:18,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 511 [2020-10-26 22:40:18,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:18,619 INFO L225 Difference]: With dead ends: 23712 [2020-10-26 22:40:18,619 INFO L226 Difference]: Without dead ends: 23709 [2020-10-26 22:40:18,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:40:18,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23709 states. [2020-10-26 22:40:19,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23709 to 22919. [2020-10-26 22:40:19,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22919 states. [2020-10-26 22:40:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22919 states to 22919 states and 27133 transitions. [2020-10-26 22:40:19,209 INFO L78 Accepts]: Start accepts. Automaton has 22919 states and 27133 transitions. Word has length 511 [2020-10-26 22:40:19,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:19,209 INFO L481 AbstractCegarLoop]: Abstraction has 22919 states and 27133 transitions. [2020-10-26 22:40:19,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:40:19,210 INFO L276 IsEmpty]: Start isEmpty. Operand 22919 states and 27133 transitions. [2020-10-26 22:40:19,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-10-26 22:40:19,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:19,239 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:40:19,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 22:40:19,239 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:19,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:19,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1812371529, now seen corresponding path program 1 times [2020-10-26 22:40:19,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:19,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163438868] [2020-10-26 22:40:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:19,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:19,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:21,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:23,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:24,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 575 [2020-10-26 22:40:24,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:40:24,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 22:40:24,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:24,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:40:24,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:40:24,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 358 [2020-10-26 22:40:24,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:24,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:24,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:24,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:24,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:24,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 22:40:24,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:40:24,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:24,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:24,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:24,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:40:24,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:24,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-26 22:40:24,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:40:24,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:24,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:40:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:24,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:25,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:25,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:40:25,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:25,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-26 22:40:25,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:40:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:40:25,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:25,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:40:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:25,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:25,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:25,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 22:40:25,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:25,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-26 22:40:25,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-26 22:40:25,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:25,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-26 22:40:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:25,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:25,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:25,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:40:25,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:25,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 22:40:25,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-26 22:40:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:25,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 345 proven. 425 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-26 22:40:25,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163438868] [2020-10-26 22:40:25,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:25,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:40:25,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390342992] [2020-10-26 22:40:25,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 22:40:25,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:25,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 22:40:25,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:40:25,868 INFO L87 Difference]: Start difference. First operand 22919 states and 27133 transitions. Second operand 10 states. [2020-10-26 22:40:26,023 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-26 22:40:31,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:31,541 INFO L93 Difference]: Finished difference Result 47757 states and 59161 transitions. [2020-10-26 22:40:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 22:40:31,542 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 557 [2020-10-26 22:40:31,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:31,614 INFO L225 Difference]: With dead ends: 47757 [2020-10-26 22:40:31,614 INFO L226 Difference]: Without dead ends: 28472 [2020-10-26 22:40:31,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2020-10-26 22:40:31,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28472 states. [2020-10-26 22:40:32,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28472 to 27571. [2020-10-26 22:40:32,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27571 states. [2020-10-26 22:40:32,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27571 states to 27571 states and 32607 transitions. [2020-10-26 22:40:32,264 INFO L78 Accepts]: Start accepts. Automaton has 27571 states and 32607 transitions. Word has length 557 [2020-10-26 22:40:32,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:32,264 INFO L481 AbstractCegarLoop]: Abstraction has 27571 states and 32607 transitions. [2020-10-26 22:40:32,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 22:40:32,264 INFO L276 IsEmpty]: Start isEmpty. Operand 27571 states and 32607 transitions. [2020-10-26 22:40:32,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2020-10-26 22:40:32,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:32,294 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:40:32,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 22:40:32,294 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:32,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:32,295 INFO L82 PathProgramCache]: Analyzing trace with hash 606530929, now seen corresponding path program 1 times [2020-10-26 22:40:32,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:32,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710177613] [2020-10-26 22:40:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:32,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:32,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:32,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:34,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:36,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:37,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:37,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 651 [2020-10-26 22:40:37,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:40:37,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-26 22:40:37,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:37,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:37,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:40:37,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 22:40:37,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:37,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:37,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:37,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:37,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:37,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:37,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:40:37,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:37,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:37,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:37,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:37,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:37,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:40:37,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:37,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 22:40:37,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:37,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:37,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:37,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:37,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:37,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:40:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:37,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:37,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:37,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:40:37,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:37,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 22:40:37,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:40:37,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:37,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:40:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:37,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:37,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:38,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:38,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:40:38,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:40:38,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-26 22:40:38,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:38,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:38,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:38,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:40:38,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:38,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 22:40:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:38,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:38,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:38,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 22:40:38,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:38,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 22:40:38,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-26 22:40:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:38,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:38,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-26 22:40:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:38,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:38,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:38,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:40:38,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:38,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 22:40:38,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-26 22:40:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:38,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 505 proven. 168 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2020-10-26 22:40:38,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710177613] [2020-10-26 22:40:38,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:38,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:38,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524051923] [2020-10-26 22:40:38,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:38,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:38,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:38,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:38,620 INFO L87 Difference]: Start difference. First operand 27571 states and 32607 transitions. Second operand 7 states. [2020-10-26 22:40:42,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:42,399 INFO L93 Difference]: Finished difference Result 49215 states and 58382 transitions. [2020-10-26 22:40:42,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:40:42,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 631 [2020-10-26 22:40:42,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:42,453 INFO L225 Difference]: With dead ends: 49215 [2020-10-26 22:40:42,453 INFO L226 Difference]: Without dead ends: 27613 [2020-10-26 22:40:42,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:40:42,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27613 states. [2020-10-26 22:40:42,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27613 to 27569. [2020-10-26 22:40:42,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27569 states. [2020-10-26 22:40:42,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27569 states to 27569 states and 32562 transitions. [2020-10-26 22:40:42,906 INFO L78 Accepts]: Start accepts. Automaton has 27569 states and 32562 transitions. Word has length 631 [2020-10-26 22:40:42,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:42,906 INFO L481 AbstractCegarLoop]: Abstraction has 27569 states and 32562 transitions. [2020-10-26 22:40:42,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:42,906 INFO L276 IsEmpty]: Start isEmpty. Operand 27569 states and 32562 transitions. [2020-10-26 22:40:42,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2020-10-26 22:40:42,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:42,943 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:40:42,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 22:40:42,943 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:42,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:42,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1948140989, now seen corresponding path program 1 times [2020-10-26 22:40:42,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:42,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489706176] [2020-10-26 22:40:42,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:43,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:43,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:44,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:45,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:48,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:48,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 664 [2020-10-26 22:40:48,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:40:48,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-26 22:40:48,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-26 22:40:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 22:40:48,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:48,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:48,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:48,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:48,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:48,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:48,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:40:48,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:48,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:48,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:48,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:48,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:48,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:40:48,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:48,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 22:40:48,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:48,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:48,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:48,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-26 22:40:48,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:40:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:48,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:48,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:48,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:40:48,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:48,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 22:40:48,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:48,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:48,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:40:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:48,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:48,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:48,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-26 22:40:48,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:48,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 22:40:48,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:40:48,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:48,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-26 22:40:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:48,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:48,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:40:48,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:48,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-26 22:40:48,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:40:48,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:48,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-26 22:40:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:49,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:49,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:49,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:40:49,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:49,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 22:40:49,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:49,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:49,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-26 22:40:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:49,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 637 proven. 130 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2020-10-26 22:40:49,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489706176] [2020-10-26 22:40:49,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:49,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:49,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742668810] [2020-10-26 22:40:49,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:49,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:49,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:49,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:49,359 INFO L87 Difference]: Start difference. First operand 27569 states and 32562 transitions. Second operand 7 states. [2020-10-26 22:40:53,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:53,543 INFO L93 Difference]: Finished difference Result 55042 states and 65031 transitions. [2020-10-26 22:40:53,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:40:53,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 644 [2020-10-26 22:40:53,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:53,622 INFO L225 Difference]: With dead ends: 55042 [2020-10-26 22:40:53,623 INFO L226 Difference]: Without dead ends: 27667 [2020-10-26 22:40:53,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:40:53,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27667 states. [2020-10-26 22:40:54,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27667 to 27605. [2020-10-26 22:40:54,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27605 states. [2020-10-26 22:40:54,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27605 states to 27605 states and 32399 transitions. [2020-10-26 22:40:54,145 INFO L78 Accepts]: Start accepts. Automaton has 27605 states and 32399 transitions. Word has length 644 [2020-10-26 22:40:54,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:54,145 INFO L481 AbstractCegarLoop]: Abstraction has 27605 states and 32399 transitions. [2020-10-26 22:40:54,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:54,145 INFO L276 IsEmpty]: Start isEmpty. Operand 27605 states and 32399 transitions. [2020-10-26 22:40:54,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2020-10-26 22:40:54,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:54,184 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-26 22:40:54,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 22:40:54,184 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:54,185 INFO L82 PathProgramCache]: Analyzing trace with hash 827181161, now seen corresponding path program 1 times [2020-10-26 22:40:54,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:54,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801746638] [2020-10-26 22:40:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:54,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:54,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:55,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:57,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:57,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:59,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:59,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:59,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 678 [2020-10-26 22:40:59,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:40:59,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-26 22:40:59,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:59,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:59,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-26 22:40:59,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-26 22:40:59,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:59,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:59,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:59,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:59,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:59,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:59,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:40:59,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:59,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:59,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:59,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:59,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:59,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:59,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:59,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:59,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:40:59,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:59,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 22:40:59,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:59,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:59,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:59,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:59,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:40:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:59,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:59,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:59,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 22:40:59,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:59,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 22:40:59,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:59,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:59,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:59,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 22:40:59,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:59,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-26 22:40:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:59,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:59,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:59,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:40:59,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:59,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 22:40:59,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:59,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:59,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:59,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:40:59,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:59,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-26 22:40:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:59,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:00,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:00,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 22:41:00,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:00,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 22:41:00,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-26 22:41:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:00,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:00,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-10-26 22:41:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:00,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:00,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:00,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:41:00,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:00,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 22:41:00,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:00,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:00,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-26 22:41:00,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:00,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 507 proven. 168 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2020-10-26 22:41:00,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801746638] [2020-10-26 22:41:00,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:00,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:41:00,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860776868] [2020-10-26 22:41:00,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:41:00,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:00,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:41:00,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:41:00,427 INFO L87 Difference]: Start difference. First operand 27605 states and 32399 transitions. Second operand 7 states. [2020-10-26 22:41:04,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:04,799 INFO L93 Difference]: Finished difference Result 54634 states and 64167 transitions. [2020-10-26 22:41:04,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:41:04,800 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 658 [2020-10-26 22:41:04,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:04,857 INFO L225 Difference]: With dead ends: 54634 [2020-10-26 22:41:04,857 INFO L226 Difference]: Without dead ends: 30899 [2020-10-26 22:41:04,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:41:04,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30899 states. [2020-10-26 22:41:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30899 to 30269. [2020-10-26 22:41:05,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30269 states. [2020-10-26 22:41:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30269 states to 30269 states and 35345 transitions. [2020-10-26 22:41:05,307 INFO L78 Accepts]: Start accepts. Automaton has 30269 states and 35345 transitions. Word has length 658 [2020-10-26 22:41:05,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:05,308 INFO L481 AbstractCegarLoop]: Abstraction has 30269 states and 35345 transitions. [2020-10-26 22:41:05,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:41:05,308 INFO L276 IsEmpty]: Start isEmpty. Operand 30269 states and 35345 transitions. [2020-10-26 22:41:05,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2020-10-26 22:41:05,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:05,353 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:41:05,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 22:41:05,353 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:05,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:05,354 INFO L82 PathProgramCache]: Analyzing trace with hash -719493637, now seen corresponding path program 1 times [2020-10-26 22:41:05,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:05,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060714984] [2020-10-26 22:41:05,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:05,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:05,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:06,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:08,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:10,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:10,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:10,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 697 [2020-10-26 22:41:10,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:41:10,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 22:41:10,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:41:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-26 22:41:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-26 22:41:10,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:10,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:10,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:10,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:10,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:10,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:10,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:41:10,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:10,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:10,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:10,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:10,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:10,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:41:10,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:10,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 22:41:10,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:10,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:10,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:10,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:41:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:10,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:10,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:10,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:41:10,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:10,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 22:41:10,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:10,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:41:10,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:10,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:41:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:10,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:11,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:11,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 22:41:11,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:41:11,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-26 22:41:11,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-26 22:41:11,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:11,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-10-26 22:41:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:11,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:11,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:41:11,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:11,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 22:41:11,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:41:11,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:11,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2020-10-26 22:41:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:11,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:11,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:11,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:41:11,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:11,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 22:41:11,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:11,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-26 22:41:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:11,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 754 proven. 302 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2020-10-26 22:41:12,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060714984] [2020-10-26 22:41:12,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:12,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 22:41:12,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393568585] [2020-10-26 22:41:12,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:41:12,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:12,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:41:12,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:41:12,061 INFO L87 Difference]: Start difference. First operand 30269 states and 35345 transitions. Second operand 9 states. [2020-10-26 22:41:16,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:16,515 INFO L93 Difference]: Finished difference Result 56531 states and 66498 transitions. [2020-10-26 22:41:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:41:16,516 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 677 [2020-10-26 22:41:16,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:16,577 INFO L225 Difference]: With dead ends: 56531 [2020-10-26 22:41:16,577 INFO L226 Difference]: Without dead ends: 31472 [2020-10-26 22:41:16,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-26 22:41:16,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31472 states. [2020-10-26 22:41:17,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31472 to 30849. [2020-10-26 22:41:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30849 states. [2020-10-26 22:41:17,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30849 states to 30849 states and 35692 transitions. [2020-10-26 22:41:17,061 INFO L78 Accepts]: Start accepts. Automaton has 30849 states and 35692 transitions. Word has length 677 [2020-10-26 22:41:17,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:17,062 INFO L481 AbstractCegarLoop]: Abstraction has 30849 states and 35692 transitions. [2020-10-26 22:41:17,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:41:17,062 INFO L276 IsEmpty]: Start isEmpty. Operand 30849 states and 35692 transitions. [2020-10-26 22:41:17,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2020-10-26 22:41:17,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:17,093 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:41:17,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 22:41:17,094 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:17,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:17,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1250512397, now seen corresponding path program 1 times [2020-10-26 22:41:17,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:17,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999122022] [2020-10-26 22:41:17,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:17,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:17,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:17,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:21,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:22,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:22,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:22,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 723 [2020-10-26 22:41:22,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:41:22,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 22:41:22,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-26 22:41:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:41:22,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:22,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:22,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:22,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:22,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:22,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:22,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:41:22,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:22,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:22,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:22,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:22,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:22,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:41:22,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:22,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 22:41:22,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:22,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:22,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:22,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:22,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:22,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:41:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:22,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:22,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:22,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:41:22,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:22,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 22:41:22,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-26 22:41:22,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:22,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:41:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:22,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:22,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:22,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 22:41:22,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:22,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-26 22:41:22,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 22:41:22,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:22,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-10-26 22:41:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:22,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:22,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:22,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-26 22:41:22,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:22,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 22:41:22,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-26 22:41:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:22,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:22,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-10-26 22:41:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:22,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:22,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:22,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:41:22,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:22,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 22:41:22,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:22,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:22,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-26 22:41:22,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:22,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 581 proven. 221 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2020-10-26 22:41:23,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999122022] [2020-10-26 22:41:23,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:23,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:41:23,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524182355] [2020-10-26 22:41:23,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:41:23,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:23,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:41:23,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:41:23,276 INFO L87 Difference]: Start difference. First operand 30849 states and 35692 transitions. Second operand 7 states. [2020-10-26 22:41:27,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:27,219 INFO L93 Difference]: Finished difference Result 59816 states and 69459 transitions. [2020-10-26 22:41:27,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:41:27,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 703 [2020-10-26 22:41:27,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:27,291 INFO L225 Difference]: With dead ends: 59816 [2020-10-26 22:41:27,291 INFO L226 Difference]: Without dead ends: 34177 [2020-10-26 22:41:27,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:41:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34177 states. [2020-10-26 22:41:27,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34177 to 33744. [2020-10-26 22:41:27,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33744 states. [2020-10-26 22:41:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33744 states to 33744 states and 38873 transitions. [2020-10-26 22:41:27,856 INFO L78 Accepts]: Start accepts. Automaton has 33744 states and 38873 transitions. Word has length 703 [2020-10-26 22:41:27,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:27,857 INFO L481 AbstractCegarLoop]: Abstraction has 33744 states and 38873 transitions. [2020-10-26 22:41:27,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:41:27,857 INFO L276 IsEmpty]: Start isEmpty. Operand 33744 states and 38873 transitions. [2020-10-26 22:41:27,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2020-10-26 22:41:27,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:27,889 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:41:27,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 22:41:27,889 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:27,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:27,890 INFO L82 PathProgramCache]: Analyzing trace with hash 2058229933, now seen corresponding path program 1 times [2020-10-26 22:41:27,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:27,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388728489] [2020-10-26 22:41:27,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:28,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:28,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:28,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:29,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:33,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:33,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 732 [2020-10-26 22:41:33,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:41:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 22:41:33,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-26 22:41:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:41:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:33,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:33,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:33,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:33,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:33,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:33,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:41:33,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:33,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:33,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:33,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:33,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:33,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:33,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:33,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:41:33,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:33,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 22:41:33,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:33,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:33,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:41:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:33,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:33,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:33,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:41:33,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:33,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 22:41:33,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 22:41:33,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:33,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-26 22:41:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:33,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:33,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:41:33,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:33,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 22:41:33,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:33,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:41:33,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:33,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-26 22:41:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:33,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:33,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:33,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:41:33,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:33,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 22:41:33,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 22:41:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:33,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:33,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-10-26 22:41:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:33,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:33,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:33,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 22:41:33,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:33,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 22:41:33,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:33,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:33,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-26 22:41:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:33,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:33,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-10-26 22:41:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:33,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:33,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:33,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:41:33,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:33,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 22:41:33,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:33,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:33,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-26 22:41:33,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:33,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1733 backedges. 555 proven. 215 refuted. 0 times theorem prover too weak. 963 trivial. 0 not checked. [2020-10-26 22:41:34,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388728489] [2020-10-26 22:41:34,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:34,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:41:34,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081272113] [2020-10-26 22:41:34,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:41:34,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:34,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:41:34,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:41:34,011 INFO L87 Difference]: Start difference. First operand 33744 states and 38873 transitions. Second operand 7 states. [2020-10-26 22:41:37,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:37,739 INFO L93 Difference]: Finished difference Result 62533 states and 72154 transitions. [2020-10-26 22:41:37,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:41:37,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 710 [2020-10-26 22:41:37,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:37,805 INFO L225 Difference]: With dead ends: 62533 [2020-10-26 22:41:37,805 INFO L226 Difference]: Without dead ends: 35336 [2020-10-26 22:41:37,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:41:37,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35336 states. [2020-10-26 22:41:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35336 to 34314. [2020-10-26 22:41:38,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34314 states. [2020-10-26 22:41:38,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34314 states to 34314 states and 39472 transitions. [2020-10-26 22:41:38,433 INFO L78 Accepts]: Start accepts. Automaton has 34314 states and 39472 transitions. Word has length 710 [2020-10-26 22:41:38,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:38,433 INFO L481 AbstractCegarLoop]: Abstraction has 34314 states and 39472 transitions. [2020-10-26 22:41:38,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:41:38,433 INFO L276 IsEmpty]: Start isEmpty. Operand 34314 states and 39472 transitions. [2020-10-26 22:41:38,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2020-10-26 22:41:38,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:38,466 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:41:38,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-26 22:41:38,466 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:38,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:38,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1876242609, now seen corresponding path program 1 times [2020-10-26 22:41:38,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:38,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911863478] [2020-10-26 22:41:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:38,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:38,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:39,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking...