/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/Problem16_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:03:54,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:03:54,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:03:54,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:03:54,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:03:54,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:03:54,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:03:54,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:03:54,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:03:54,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:03:54,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:03:54,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:03:54,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:03:54,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:03:54,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:03:54,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:03:54,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:03:54,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:03:55,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:03:55,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:03:55,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:03:55,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:03:55,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:03:55,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:03:55,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:03:55,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:03:55,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:03:55,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:03:55,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:03:55,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:03:55,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:03:55,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:03:55,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:03:55,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:03:55,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:03:55,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:03:55,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:03:55,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:03:55,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:03:55,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:03:55,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:03:55,086 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 [2020-10-27 00:03:55,116 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:03:55,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:03:55,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:03:55,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:03:55,119 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:03:55,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:03:55,119 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:03:55,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:03:55,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:03:55,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:03:55,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:03:55,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:03:55,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:03:55,121 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:03:55,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:03:55,121 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:03:55,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:03:55,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:03:55,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:03:55,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:03:55,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:03:55,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:03:55,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:03:55,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:03:55,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:03:55,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:03:55,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:03:55,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:03:55,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:03:55,124 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:03:55,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:03:55,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:03:55,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:03:55,551 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:03:55,552 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:03:55,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label56.c [2020-10-27 00:03:55,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23ad6c3dc/adcc921018ff4da7a4acb64fc06fee2f/FLAG570a3d2a6 [2020-10-27 00:03:56,564 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:03:56,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label56.c [2020-10-27 00:03:56,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23ad6c3dc/adcc921018ff4da7a4acb64fc06fee2f/FLAG570a3d2a6 [2020-10-27 00:03:56,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23ad6c3dc/adcc921018ff4da7a4acb64fc06fee2f [2020-10-27 00:03:56,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:03:56,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:03:56,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:03:56,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:03:56,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:03:56,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:03:56" (1/1) ... [2020-10-27 00:03:56,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@232de4eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:56, skipping insertion in model container [2020-10-27 00:03:56,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:03:56" (1/1) ... [2020-10-27 00:03:56,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:03:56,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:03:57,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:03:57,577 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:03:57,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:03:57,845 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:03:57,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:57 WrapperNode [2020-10-27 00:03:57,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:03:57,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:03:57,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:03:57,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:03:57,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:57" (1/1) ... [2020-10-27 00:03:57,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:57" (1/1) ... [2020-10-27 00:03:57,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:57" (1/1) ... [2020-10-27 00:03:57,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:57" (1/1) ... [2020-10-27 00:03:58,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:57" (1/1) ... [2020-10-27 00:03:58,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:57" (1/1) ... [2020-10-27 00:03:58,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:57" (1/1) ... [2020-10-27 00:03:58,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:03:58,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:03:58,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:03:58,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:03:58,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:57" (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 [2020-10-27 00:03:58,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:03:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:03:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:03:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:03:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:03:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:03:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:03:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:03:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:03:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:03:58,158 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:03:58,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:03:58,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:03:58,159 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:03:58,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:03:58,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:03:58,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:03:58,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:03:58,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:03:58,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:03:58,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:04:01,027 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:04:01,027 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:04:01,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:04:01 BoogieIcfgContainer [2020-10-27 00:04:01,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:04:01,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:04:01,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:04:01,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:04:01,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:03:56" (1/3) ... [2020-10-27 00:04:01,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65fdc139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:04:01, skipping insertion in model container [2020-10-27 00:04:01,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:57" (2/3) ... [2020-10-27 00:04:01,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65fdc139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:04:01, skipping insertion in model container [2020-10-27 00:04:01,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:04:01" (3/3) ... [2020-10-27 00:04:01,040 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label56.c [2020-10-27 00:04:01,053 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:04:01,058 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:04:01,073 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:04:01,104 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:04:01,104 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:04:01,104 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:04:01,105 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:04:01,105 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:04:01,105 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:04:01,105 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:04:01,105 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:04:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 00:04:01,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 00:04:01,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:01,146 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] [2020-10-27 00:04:01,147 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:01,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1558394036, now seen corresponding path program 1 times [2020-10-27 00:04:01,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:01,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776338536] [2020-10-27 00:04:01,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:01,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:01,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:01,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 00:04:01,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-27 00:04:01,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:04:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:04:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 00:04:01,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:04:02,100 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:04:02,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:02,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:02,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:02,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:02,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:04:02,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:04:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:02,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:04:02,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776338536] [2020-10-27 00:04:02,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:04:02,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:04:02,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142842003] [2020-10-27 00:04:02,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:04:02,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:02,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:04:02,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:04:02,220 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-27 00:04:02,398 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:04:09,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:09,972 INFO L93 Difference]: Finished difference Result 1520 states and 2855 transitions. [2020-10-27 00:04:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:04:09,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-27 00:04:09,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:10,004 INFO L225 Difference]: With dead ends: 1520 [2020-10-27 00:04:10,004 INFO L226 Difference]: Without dead ends: 1039 [2020-10-27 00:04:10,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:10,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-27 00:04:10,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1035. [2020-10-27 00:04:10,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-27 00:04:10,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1486 transitions. [2020-10-27 00:04:10,169 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1486 transitions. Word has length 40 [2020-10-27 00:04:10,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:10,170 INFO L481 AbstractCegarLoop]: Abstraction has 1035 states and 1486 transitions. [2020-10-27 00:04:10,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:04:10,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1486 transitions. [2020-10-27 00:04:10,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 00:04:10,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:10,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:10,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:04:10,181 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:10,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:10,182 INFO L82 PathProgramCache]: Analyzing trace with hash -87136908, now seen corresponding path program 1 times [2020-10-27 00:04:10,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:10,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129111334] [2020-10-27 00:04:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:10,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:10,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:11,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:11,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 00:04:11,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:04:11,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-10-27 00:04:11,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:11,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:04:11,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:04:11,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:04:11,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:04:11,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:11,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:11,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:11,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:11,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:11,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:04:11,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:11,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:11,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:11,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:04:11,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:04:11,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:11,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:11,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:11,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:04:11,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:11,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 00:04:11,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:04:11,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:04:11,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129111334] [2020-10-27 00:04:11,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:04:11,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:04:11,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201775261] [2020-10-27 00:04:11,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:11,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:11,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:11,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:11,772 INFO L87 Difference]: Start difference. First operand 1035 states and 1486 transitions. Second operand 7 states. [2020-10-27 00:04:17,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:17,601 INFO L93 Difference]: Finished difference Result 3125 states and 4558 transitions. [2020-10-27 00:04:17,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:04:17,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-27 00:04:17,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:17,621 INFO L225 Difference]: With dead ends: 3125 [2020-10-27 00:04:17,621 INFO L226 Difference]: Without dead ends: 2096 [2020-10-27 00:04:17,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:04:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2020-10-27 00:04:17,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 2071. [2020-10-27 00:04:17,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2071 states. [2020-10-27 00:04:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2682 transitions. [2020-10-27 00:04:17,711 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2682 transitions. Word has length 116 [2020-10-27 00:04:17,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:17,713 INFO L481 AbstractCegarLoop]: Abstraction has 2071 states and 2682 transitions. [2020-10-27 00:04:17,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:17,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2682 transitions. [2020-10-27 00:04:17,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-27 00:04:17,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:17,721 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:04:17,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:04:17,721 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:17,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:17,722 INFO L82 PathProgramCache]: Analyzing trace with hash -990347230, now seen corresponding path program 1 times [2020-10-27 00:04:17,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:17,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12484629] [2020-10-27 00:04:17,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:17,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:17,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:18,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:18,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:19,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:21,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:22,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:22,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-27 00:04:22,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 00:04:22,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4731 [2020-10-27 00:04:22,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:22,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 00:04:22,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:04:22,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-27 00:04:22,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:22,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:22,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:22,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:22,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:22,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:22,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:04:22,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:04:22,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:22,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:22,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:22,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:22,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:22,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:04:22,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:04:22,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-27 00:04:22,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:22,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:22,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:22,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 00:04:22,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:23,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:04:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:23,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:23,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:23,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:23,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:04:23,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:04:23,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-27 00:04:23,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:23,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:23,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:23,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:04:23,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 00:04:23,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12484629] [2020-10-27 00:04:23,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:23,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:04:23,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098780239] [2020-10-27 00:04:23,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 00:04:23,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:23,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 00:04:23,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:04:23,614 INFO L87 Difference]: Start difference. First operand 2071 states and 2682 transitions. Second operand 9 states. [2020-10-27 00:04:32,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:32,207 INFO L93 Difference]: Finished difference Result 5593 states and 7499 transitions. [2020-10-27 00:04:32,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 00:04:32,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 203 [2020-10-27 00:04:32,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:32,232 INFO L225 Difference]: With dead ends: 5593 [2020-10-27 00:04:32,233 INFO L226 Difference]: Without dead ends: 3528 [2020-10-27 00:04:32,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-27 00:04:32,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2020-10-27 00:04:32,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 2789. [2020-10-27 00:04:32,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2789 states. [2020-10-27 00:04:32,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 3757 transitions. [2020-10-27 00:04:32,362 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 3757 transitions. Word has length 203 [2020-10-27 00:04:32,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:32,363 INFO L481 AbstractCegarLoop]: Abstraction has 2789 states and 3757 transitions. [2020-10-27 00:04:32,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 00:04:32,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 3757 transitions. [2020-10-27 00:04:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-27 00:04:32,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:32,379 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-27 00:04:32,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:04:32,380 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:32,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:32,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1984302664, now seen corresponding path program 1 times [2020-10-27 00:04:32,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:32,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879910317] [2020-10-27 00:04:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:32,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:32,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:34,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:34,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:35,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:35,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:37,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:37,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 500 [2020-10-27 00:04:37,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 00:04:37,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 00:04:37,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:37,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:04:37,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 00:04:37,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-27 00:04:37,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:37,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:37,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:37,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:37,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:37,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:37,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:04:37,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:37,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:37,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:37,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 00:04:37,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:37,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:37,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:37,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:04:37,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:37,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 00:04:37,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 00:04:37,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:37,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:04:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:37,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:37,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:38,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:38,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 00:04:38,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:04:38,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-27 00:04:38,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:38,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-27 00:04:38,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:38,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-27 00:04:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:38,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:38,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:38,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:38,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:38,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-27 00:04:38,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:04:38,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:04:38,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-27 00:04:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:38,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:38,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:38,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 00:04:38,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:38,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 00:04:38,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:38,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:38,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 00:04:38,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:38,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:04:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 420 proven. 198 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-27 00:04:39,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879910317] [2020-10-27 00:04:39,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:39,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:04:39,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500436314] [2020-10-27 00:04:39,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:04:39,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:39,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:04:39,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:04:39,229 INFO L87 Difference]: Start difference. First operand 2789 states and 3757 transitions. Second operand 8 states. [2020-10-27 00:04:45,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:45,049 INFO L93 Difference]: Finished difference Result 6682 states and 9127 transitions. [2020-10-27 00:04:45,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:04:45,050 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 482 [2020-10-27 00:04:45,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:45,071 INFO L225 Difference]: With dead ends: 6682 [2020-10-27 00:04:45,072 INFO L226 Difference]: Without dead ends: 3508 [2020-10-27 00:04:45,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-27 00:04:45,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3508 states. [2020-10-27 00:04:45,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3508 to 3486. [2020-10-27 00:04:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3486 states. [2020-10-27 00:04:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 3940 transitions. [2020-10-27 00:04:45,191 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 3940 transitions. Word has length 482 [2020-10-27 00:04:45,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:45,192 INFO L481 AbstractCegarLoop]: Abstraction has 3486 states and 3940 transitions. [2020-10-27 00:04:45,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:04:45,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 3940 transitions. [2020-10-27 00:04:45,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2020-10-27 00:04:45,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:45,218 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:45,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:04:45,218 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:45,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:45,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1651987462, now seen corresponding path program 1 times [2020-10-27 00:04:45,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:45,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028479569] [2020-10-27 00:04:45,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:45,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:45,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:45,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:48,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:50,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:50,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 729 [2020-10-27 00:04:50,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:04:50,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 00:04:50,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:04:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:04:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:04:50,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:50,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:50,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:50,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:50,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:50,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:50,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:04:50,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:04:50,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:50,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:50,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:50,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:50,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:04:50,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 00:04:50,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 00:04:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:50,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 00:04:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:50,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:50,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:50,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:50,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 00:04:50,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:50,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:04:50,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:50,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:50,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 00:04:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:50,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:50,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:50,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:50,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:50,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:04:50,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:50,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:50,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:50,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:50,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:50,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-27 00:04:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:51,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:51,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:51,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:04:51,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:51,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 00:04:51,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:51,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:51,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:04:51,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:51,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:51,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-27 00:04:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:51,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:51,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:51,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:04:51,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:51,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 00:04:51,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:51,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:04:51,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:51,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:51,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 160 proven. 380 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2020-10-27 00:04:51,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028479569] [2020-10-27 00:04:51,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:51,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:51,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071601151] [2020-10-27 00:04:51,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:51,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:51,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:51,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:51,896 INFO L87 Difference]: Start difference. First operand 3486 states and 3940 transitions. Second operand 7 states. [2020-10-27 00:04:58,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:58,817 INFO L93 Difference]: Finished difference Result 10445 states and 12019 transitions. [2020-10-27 00:04:58,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:04:58,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 709 [2020-10-27 00:04:58,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:58,862 INFO L225 Difference]: With dead ends: 10445 [2020-10-27 00:04:58,862 INFO L226 Difference]: Without dead ends: 6965 [2020-10-27 00:04:58,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:04:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6965 states. [2020-10-27 00:04:59,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6965 to 6944. [2020-10-27 00:04:59,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6944 states. [2020-10-27 00:04:59,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6944 states to 6944 states and 7908 transitions. [2020-10-27 00:04:59,087 INFO L78 Accepts]: Start accepts. Automaton has 6944 states and 7908 transitions. Word has length 709 [2020-10-27 00:04:59,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:59,088 INFO L481 AbstractCegarLoop]: Abstraction has 6944 states and 7908 transitions. [2020-10-27 00:04:59,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:59,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6944 states and 7908 transitions. [2020-10-27 00:04:59,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2020-10-27 00:04:59,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:59,123 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:04:59,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:04:59,124 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:59,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:59,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1552708506, now seen corresponding path program 1 times [2020-10-27 00:04:59,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:59,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816040321] [2020-10-27 00:04:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:59,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:59,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:59,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:03,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:04,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:04,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 747 [2020-10-27 00:05:04,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:05:04,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-27 00:05:04,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:04,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:05:04,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:05:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-27 00:05:04,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:04,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:04,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:04,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:04,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:04,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:04,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:05:04,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:04,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:04,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:04,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:05:04,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:04,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:04,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:05,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:05,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:05:05,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:05,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-27 00:05:05,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:05,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:05,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:05:05,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:05,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 00:05:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:05,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:05,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:05,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:05:05,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:05,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:05:05,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:05,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:05,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:05:05,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:05,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:05,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 00:05:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:05,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:05,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:05,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:05:05,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:05,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:05:05,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:05,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:05:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:05,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:05,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-10-27 00:05:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:05,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:05,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:05,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:05:05,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:05,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 00:05:05,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:05,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:05,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:05:05,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:05,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:06,678 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 128 proven. 425 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2020-10-27 00:05:06,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816040321] [2020-10-27 00:05:06,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:06,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:06,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128255095] [2020-10-27 00:05:06,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:06,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:06,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:06,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:06,682 INFO L87 Difference]: Start difference. First operand 6944 states and 7908 transitions. Second operand 7 states. [2020-10-27 00:05:10,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:10,978 INFO L93 Difference]: Finished difference Result 13912 states and 15908 transitions. [2020-10-27 00:05:10,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:05:10,985 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 729 [2020-10-27 00:05:10,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:11,024 INFO L225 Difference]: With dead ends: 13912 [2020-10-27 00:05:11,025 INFO L226 Difference]: Without dead ends: 7311 [2020-10-27 00:05:11,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:05:11,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7311 states. [2020-10-27 00:05:11,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7311 to 7295. [2020-10-27 00:05:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7295 states. [2020-10-27 00:05:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7295 states to 7295 states and 8302 transitions. [2020-10-27 00:05:11,240 INFO L78 Accepts]: Start accepts. Automaton has 7295 states and 8302 transitions. Word has length 729 [2020-10-27 00:05:11,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:11,241 INFO L481 AbstractCegarLoop]: Abstraction has 7295 states and 8302 transitions. [2020-10-27 00:05:11,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:11,242 INFO L276 IsEmpty]: Start isEmpty. Operand 7295 states and 8302 transitions. [2020-10-27 00:05:11,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2020-10-27 00:05:11,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:11,261 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:05:11,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:05:11,262 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:11,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:11,263 INFO L82 PathProgramCache]: Analyzing trace with hash 384554700, now seen corresponding path program 1 times [2020-10-27 00:05:11,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:11,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944569172] [2020-10-27 00:05:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:11,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:11,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:12,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:16,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:16,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 868 [2020-10-27 00:05:16,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:05:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 00:05:16,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:05:16,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:05:16,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:16,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:16,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:16,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:16,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:16,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:16,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:05:16,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:16,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:16,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:16,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:16,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:16,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:05:16,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:16,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-27 00:05:16,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:16,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:16,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:16,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:05:16,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:17,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:05:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:17,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:17,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:17,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:05:17,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:17,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 00:05:17,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:17,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:17,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:17,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:05:17,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:17,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-27 00:05:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:17,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:17,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:17,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:05:17,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:17,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:05:17,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:17,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:05:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:17,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:17,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-27 00:05:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:17,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:17,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:17,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:05:17,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:17,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 00:05:17,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:17,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:05:17,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:17,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:17,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:05:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:17,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:17,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:17,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:05:17,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:17,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 00:05:17,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:05:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:17,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 298 proven. 347 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2020-10-27 00:05:18,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944569172] [2020-10-27 00:05:18,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:18,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:18,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140846370] [2020-10-27 00:05:18,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:18,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:18,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:18,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:18,604 INFO L87 Difference]: Start difference. First operand 7295 states and 8302 transitions. Second operand 7 states. [2020-10-27 00:05:23,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:23,506 INFO L93 Difference]: Finished difference Result 16628 states and 19216 transitions. [2020-10-27 00:05:23,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:05:23,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 848 [2020-10-27 00:05:23,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:23,562 INFO L225 Difference]: With dead ends: 16628 [2020-10-27 00:05:23,563 INFO L226 Difference]: Without dead ends: 9676 [2020-10-27 00:05:23,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:05:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9676 states. [2020-10-27 00:05:23,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9676 to 8312. [2020-10-27 00:05:23,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8312 states. [2020-10-27 00:05:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8312 states to 8312 states and 9369 transitions. [2020-10-27 00:05:23,833 INFO L78 Accepts]: Start accepts. Automaton has 8312 states and 9369 transitions. Word has length 848 [2020-10-27 00:05:23,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:23,834 INFO L481 AbstractCegarLoop]: Abstraction has 8312 states and 9369 transitions. [2020-10-27 00:05:23,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:23,834 INFO L276 IsEmpty]: Start isEmpty. Operand 8312 states and 9369 transitions. [2020-10-27 00:05:23,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2020-10-27 00:05:23,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:23,860 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:05:23,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:05:23,861 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:23,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:23,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1151966540, now seen corresponding path program 1 times [2020-10-27 00:05:23,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:23,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27636109] [2020-10-27 00:05:23,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:24,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:24,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:24,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:29,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:29,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 978 [2020-10-27 00:05:29,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:05:29,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-27 00:05:29,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-27 00:05:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:05:29,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:29,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:29,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:29,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:29,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:29,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:29,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:05:29,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:29,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:29,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:29,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:29,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:29,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:29,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:29,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:29,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:05:29,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:29,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:05:29,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:29,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:29,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:29,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:05:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:29,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:29,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:29,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:05:29,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:29,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 00:05:29,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:05:29,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:29,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:05:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:29,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:29,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:29,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:05:29,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:29,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-27 00:05:29,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:29,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:29,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:29,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:05:29,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:30,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 00:05:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:30,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:30,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:30,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:05:30,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:30,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:05:30,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:30,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:30,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:05:30,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:30,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:30,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:05:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:30,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:30,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:30,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:05:30,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:30,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:05:30,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:30,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:30,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:05:30,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:30,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:30,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-27 00:05:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:30,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:30,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:30,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:05:30,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:30,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 00:05:30,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:30,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:30,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:05:30,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:30,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:31,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1950 backedges. 444 proven. 347 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked. [2020-10-27 00:05:31,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27636109] [2020-10-27 00:05:31,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:31,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:31,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695568192] [2020-10-27 00:05:31,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:31,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:31,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:31,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:31,205 INFO L87 Difference]: Start difference. First operand 8312 states and 9369 transitions. Second operand 7 states. [2020-10-27 00:05:36,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:36,019 INFO L93 Difference]: Finished difference Result 17647 states and 19963 transitions. [2020-10-27 00:05:36,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:05:36,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 956 [2020-10-27 00:05:36,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:36,054 INFO L225 Difference]: With dead ends: 17647 [2020-10-27 00:05:36,054 INFO L226 Difference]: Without dead ends: 9680 [2020-10-27 00:05:36,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:05:36,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9680 states. [2020-10-27 00:05:36,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9680 to 9668. [2020-10-27 00:05:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9668 states. [2020-10-27 00:05:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9668 states to 9668 states and 10782 transitions. [2020-10-27 00:05:36,298 INFO L78 Accepts]: Start accepts. Automaton has 9668 states and 10782 transitions. Word has length 956 [2020-10-27 00:05:36,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:36,299 INFO L481 AbstractCegarLoop]: Abstraction has 9668 states and 10782 transitions. [2020-10-27 00:05:36,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:36,299 INFO L276 IsEmpty]: Start isEmpty. Operand 9668 states and 10782 transitions. [2020-10-27 00:05:36,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2020-10-27 00:05:36,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:36,325 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:05:36,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:05:36,326 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:36,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:36,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1003063276, now seen corresponding path program 1 times [2020-10-27 00:05:36,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:36,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852390270] [2020-10-27 00:05:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:36,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:36,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:37,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:38,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:41,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:41,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 996 [2020-10-27 00:05:41,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:05:41,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-27 00:05:41,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:41,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:05:41,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:05:41,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-27 00:05:41,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:41,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:41,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:41,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:41,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:41,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:41,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:05:41,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:05:41,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:41,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:42,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:42,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:42,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:05:42,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:05:42,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-27 00:05:42,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:42,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-27 00:05:42,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:42,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:05:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:42,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:42,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:42,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:05:42,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-27 00:05:42,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:05:42,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:42,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 00:05:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:42,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:42,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:42,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:05:42,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:42,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:05:42,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:05:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:42,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:42,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-27 00:05:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:42,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:42,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:42,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:05:42,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:42,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:05:42,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:05:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:42,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:42,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2020-10-27 00:05:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:43,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:43,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:43,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:05:43,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:43,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 00:05:43,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:43,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:43,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:05:43,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:43,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1622 backedges. 173 proven. 852 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2020-10-27 00:05:44,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852390270] [2020-10-27 00:05:44,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:44,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:44,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342838769] [2020-10-27 00:05:44,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:44,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:44,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:44,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:44,325 INFO L87 Difference]: Start difference. First operand 9668 states and 10782 transitions. Second operand 7 states. [2020-10-27 00:05:48,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:48,293 INFO L93 Difference]: Finished difference Result 19342 states and 21599 transitions. [2020-10-27 00:05:48,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:05:48,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 976 [2020-10-27 00:05:48,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:48,343 INFO L225 Difference]: With dead ends: 19342 [2020-10-27 00:05:48,343 INFO L226 Difference]: Without dead ends: 10019 [2020-10-27 00:05:48,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:05:48,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10019 states. [2020-10-27 00:05:48,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10019 to 9670. [2020-10-27 00:05:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9670 states. [2020-10-27 00:05:48,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9670 states to 9670 states and 10745 transitions. [2020-10-27 00:05:48,587 INFO L78 Accepts]: Start accepts. Automaton has 9670 states and 10745 transitions. Word has length 976 [2020-10-27 00:05:48,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:48,588 INFO L481 AbstractCegarLoop]: Abstraction has 9670 states and 10745 transitions. [2020-10-27 00:05:48,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:48,588 INFO L276 IsEmpty]: Start isEmpty. Operand 9670 states and 10745 transitions. [2020-10-27 00:05:48,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2020-10-27 00:05:48,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:48,617 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:05:48,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:05:48,618 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:48,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:48,619 INFO L82 PathProgramCache]: Analyzing trace with hash 394990546, now seen corresponding path program 1 times [2020-10-27 00:05:48,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:48,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463391671] [2020-10-27 00:05:48,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:48,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:49,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:49,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:53,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:53,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1069 [2020-10-27 00:05:53,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:05:53,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 00:05:53,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:53,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:53,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-27 00:05:53,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-27 00:05:53,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:54,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:54,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:54,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:54,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:54,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:54,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:05:54,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:54,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:54,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:54,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:54,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:54,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:54,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:05:54,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:54,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:05:54,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:54,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:54,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:54,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:54,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:54,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:05:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:54,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:54,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:54,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 00:05:54,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:54,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 00:05:54,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-27 00:05:54,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:54,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-27 00:05:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:54,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:54,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:54,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:05:54,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:54,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 00:05:54,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:54,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:54,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:54,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 00:05:54,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:54,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-27 00:05:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:54,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:54,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:54,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:05:54,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:54,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:05:54,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:05:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:54,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:54,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2020-10-27 00:05:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:54,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:54,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:05:54,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:54,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:05:54,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:05:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:54,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:54,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2020-10-27 00:05:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:54,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:54,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:54,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:05:54,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:54,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:05:54,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:54,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:05:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:54,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 535 proven. 381 refuted. 0 times theorem prover too weak. 1298 trivial. 0 not checked. [2020-10-27 00:05:55,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463391671] [2020-10-27 00:05:55,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:55,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:55,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998689309] [2020-10-27 00:05:55,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:55,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:55,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:55,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:55,507 INFO L87 Difference]: Start difference. First operand 9670 states and 10745 transitions. Second operand 7 states. [2020-10-27 00:05:59,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:59,615 INFO L93 Difference]: Finished difference Result 21709 states and 24654 transitions. [2020-10-27 00:05:59,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:05:59,616 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1047 [2020-10-27 00:05:59,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:59,653 INFO L225 Difference]: With dead ends: 21709 [2020-10-27 00:05:59,654 INFO L226 Difference]: Without dead ends: 12384 [2020-10-27 00:05:59,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:05:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12384 states. [2020-10-27 00:05:59,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12384 to 12380. [2020-10-27 00:05:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12380 states. [2020-10-27 00:05:59,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12380 states to 12380 states and 14032 transitions. [2020-10-27 00:05:59,929 INFO L78 Accepts]: Start accepts. Automaton has 12380 states and 14032 transitions. Word has length 1047 [2020-10-27 00:05:59,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:59,931 INFO L481 AbstractCegarLoop]: Abstraction has 12380 states and 14032 transitions. [2020-10-27 00:05:59,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:59,931 INFO L276 IsEmpty]: Start isEmpty. Operand 12380 states and 14032 transitions. [2020-10-27 00:05:59,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1364 [2020-10-27 00:05:59,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:59,972 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:05:59,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:05:59,972 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:59,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:59,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1110021478, now seen corresponding path program 1 times [2020-10-27 00:05:59,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:59,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503044080] [2020-10-27 00:05:59,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:06:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:00,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:00,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:01,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:03,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:05,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:05,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1391 [2020-10-27 00:06:05,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:06:05,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 00:06:05,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:05,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:05,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:06:05,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:06:05,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:05,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:06:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:05,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:05,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:05,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:06:05,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:06:05,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:05,692 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-10-27 00:06:05,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:06:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:05,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:05,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:05,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:06:05,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:05,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:06:05,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:05,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:05,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:05,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:05,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:05,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:06:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:05,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:05,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:05,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:06:05,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:05,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 00:06:05,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:05,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:06:05,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:05,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:06:05,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:06,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:06:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:06,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:06,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:06,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:06:06,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:06,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 00:06:06,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:06,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:06,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:06:06,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:06:06,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:06,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:06:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:06,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:06,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:06,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:06:06,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:06,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:06:06,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 00:06:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:06,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-27 00:06:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:06,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:06,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:06,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:06:06,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:06,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:06:06,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:06,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:06,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:06:06,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:06,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:06,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-27 00:06:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:06,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:06,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:06:06,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:06,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:06:06,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:06,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:06,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:06:06,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:06,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:06,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 926 [2020-10-27 00:06:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:06,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:06,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:06,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:06:06,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:06,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:06:06,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:06:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:06,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:06,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1036 [2020-10-27 00:06:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:06,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:06,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:06,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:06:06,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:06,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 00:06:06,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:06:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:06,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:06,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:06:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:06,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:06,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:06,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:06:06,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:06,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:06:06,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:06,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:06,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:06,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:06,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3608 backedges. 553 proven. 540 refuted. 0 times theorem prover too weak. 2515 trivial. 0 not checked. [2020-10-27 00:06:08,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503044080] [2020-10-27 00:06:08,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:06:08,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:06:08,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581849120] [2020-10-27 00:06:08,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:06:08,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:06:08,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:06:08,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:06:08,059 INFO L87 Difference]: Start difference. First operand 12380 states and 14032 transitions. Second operand 7 states. [2020-10-27 00:06:12,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:06:12,896 INFO L93 Difference]: Finished difference Result 24762 states and 28123 transitions. [2020-10-27 00:06:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:06:12,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1363 [2020-10-27 00:06:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:06:12,946 INFO L225 Difference]: With dead ends: 24762 [2020-10-27 00:06:12,947 INFO L226 Difference]: Without dead ends: 12727 [2020-10-27 00:06:12,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:06:12,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12727 states. [2020-10-27 00:06:13,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12727 to 12727. [2020-10-27 00:06:13,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12727 states. [2020-10-27 00:06:13,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12727 states to 12727 states and 14419 transitions. [2020-10-27 00:06:13,195 INFO L78 Accepts]: Start accepts. Automaton has 12727 states and 14419 transitions. Word has length 1363 [2020-10-27 00:06:13,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:06:13,197 INFO L481 AbstractCegarLoop]: Abstraction has 12727 states and 14419 transitions. [2020-10-27 00:06:13,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:06:13,197 INFO L276 IsEmpty]: Start isEmpty. Operand 12727 states and 14419 transitions. [2020-10-27 00:06:13,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1366 [2020-10-27 00:06:13,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:06:13,234 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:06:13,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:06:13,235 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:06:13,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:06:13,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1471788322, now seen corresponding path program 1 times [2020-10-27 00:06:13,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:06:13,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893603318] [2020-10-27 00:06:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:06:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:13,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:13,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:13,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:16,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:18,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:18,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1393 [2020-10-27 00:06:18,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:06:18,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 00:06:18,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:18,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:18,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-27 00:06:18,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:06:18,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:18,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:06:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:18,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:18,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:18,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:06:18,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:18,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:06:18,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:18,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:18,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:18,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:18,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:18,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:06:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:18,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:18,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:18,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:06:18,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:18,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:06:18,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:18,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:18,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:06:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:18,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:18,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:18,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:06:18,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:18,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 00:06:18,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:18,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:06:18,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:18,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:06:18,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:19,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:06:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:19,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:19,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:19,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:06:19,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:19,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 00:06:19,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:19,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:19,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:06:19,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:06:19,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:19,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:06:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:19,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:19,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:19,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:06:19,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:19,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:06:19,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:19,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:19,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 00:06:19,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:19,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:19,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2020-10-27 00:06:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:19,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:19,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:19,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:06:19,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:19,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:06:19,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:06:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:19,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:19,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-10-27 00:06:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:19,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:19,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:06:19,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:19,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:06:19,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:06:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:19,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:19,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 928 [2020-10-27 00:06:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:19,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:19,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:19,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:06:19,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:19,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 00:06:19,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:06:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:19,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:19,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1038 [2020-10-27 00:06:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:19,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:19,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:19,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:06:19,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:19,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:06:19,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:19,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:19,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:06:19,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:19,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:19,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:06:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:19,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:19,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:19,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:06:19,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:19,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:06:19,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:19,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:19,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:19,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:19,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 553 proven. 540 refuted. 0 times theorem prover too weak. 2519 trivial. 0 not checked. [2020-10-27 00:06:21,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893603318] [2020-10-27 00:06:21,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:06:21,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:06:21,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056210693] [2020-10-27 00:06:21,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:06:21,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:06:21,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:06:21,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:06:21,032 INFO L87 Difference]: Start difference. First operand 12727 states and 14419 transitions. Second operand 7 states. [2020-10-27 00:06:27,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:06:27,884 INFO L93 Difference]: Finished difference Result 28156 states and 32048 transitions. [2020-10-27 00:06:27,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:06:27,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1365 [2020-10-27 00:06:27,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:06:27,927 INFO L225 Difference]: With dead ends: 28156 [2020-10-27 00:06:27,928 INFO L226 Difference]: Without dead ends: 15774 [2020-10-27 00:06:27,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:06:27,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15774 states. [2020-10-27 00:06:28,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15774 to 15774. [2020-10-27 00:06:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15774 states. [2020-10-27 00:06:28,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15774 states to 15774 states and 17718 transitions. [2020-10-27 00:06:28,224 INFO L78 Accepts]: Start accepts. Automaton has 15774 states and 17718 transitions. Word has length 1365 [2020-10-27 00:06:28,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:06:28,225 INFO L481 AbstractCegarLoop]: Abstraction has 15774 states and 17718 transitions. [2020-10-27 00:06:28,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:06:28,225 INFO L276 IsEmpty]: Start isEmpty. Operand 15774 states and 17718 transitions. [2020-10-27 00:06:28,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1399 [2020-10-27 00:06:28,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:06:28,265 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 00:06:28,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:06:28,265 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:06:28,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:06:28,266 INFO L82 PathProgramCache]: Analyzing trace with hash -2025906388, now seen corresponding path program 1 times [2020-10-27 00:06:28,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:06:28,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355152665] [2020-10-27 00:06:28,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:06:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:28,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:28,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:29,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:30,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:33,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:33,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1426 [2020-10-27 00:06:33,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:06:33,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 00:06:33,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:33,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:33,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-27 00:06:33,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:06:33,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:33,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:06:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:33,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:33,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:33,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:06:33,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:33,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:06:33,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:33,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:33,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:33,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:33,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:33,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:06:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:33,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:33,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:33,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:06:33,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:33,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:06:33,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:33,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:33,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:33,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:33,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:33,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:06:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:33,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:33,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:33,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:06:33,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:33,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:06:33,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:33,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:33,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:33,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:33,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:33,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:06:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:34,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:34,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:34,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:06:34,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:34,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:06:34,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:06:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-27 00:06:34,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:34,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-27 00:06:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:34,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:34,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:34,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:06:34,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:34,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:06:34,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:34,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:34,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:06:34,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:06:34,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:34,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2020-10-27 00:06:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:34,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:34,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:34,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:06:34,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:34,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:06:34,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:06:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:34,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:34,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 819 [2020-10-27 00:06:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:34,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:34,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:34,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:06:34,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:34,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:06:34,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:34,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:34,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:06:34,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:34,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:34,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 961 [2020-10-27 00:06:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:34,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:34,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:34,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:06:34,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:34,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:06:34,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:34,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:34,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:06:34,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:34,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:34,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1071 [2020-10-27 00:06:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:34,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:34,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:34,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:06:34,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:34,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 00:06:34,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:34,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:34,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:06:34,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:34,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:34,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:06:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:34,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:34,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:34,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:06:34,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:34,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:06:34,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:34,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3720 backedges. 512 proven. 266 refuted. 0 times theorem prover too weak. 2942 trivial. 0 not checked. [2020-10-27 00:06:35,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355152665] [2020-10-27 00:06:35,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:06:35,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:06:35,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303357769] [2020-10-27 00:06:35,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:06:35,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:06:35,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:06:35,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:06:35,952 INFO L87 Difference]: Start difference. First operand 15774 states and 17718 transitions. Second operand 7 states. [2020-10-27 00:06:40,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:06:40,737 INFO L93 Difference]: Finished difference Result 32555 states and 36727 transitions. [2020-10-27 00:06:40,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:06:40,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1398 [2020-10-27 00:06:40,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:06:40,786 INFO L225 Difference]: With dead ends: 32555 [2020-10-27 00:06:40,787 INFO L226 Difference]: Without dead ends: 17465 [2020-10-27 00:06:40,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:06:40,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17465 states. [2020-10-27 00:06:41,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17465 to 16448. [2020-10-27 00:06:41,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16448 states. [2020-10-27 00:06:41,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16448 states to 16448 states and 18211 transitions. [2020-10-27 00:06:41,093 INFO L78 Accepts]: Start accepts. Automaton has 16448 states and 18211 transitions. Word has length 1398 [2020-10-27 00:06:41,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:06:41,094 INFO L481 AbstractCegarLoop]: Abstraction has 16448 states and 18211 transitions. [2020-10-27 00:06:41,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:06:41,094 INFO L276 IsEmpty]: Start isEmpty. Operand 16448 states and 18211 transitions. [2020-10-27 00:06:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1411 [2020-10-27 00:06:41,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:06:41,134 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:06:41,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 00:06:41,135 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:06:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:06:41,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1952856936, now seen corresponding path program 1 times [2020-10-27 00:06:41,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:06:41,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798307421] [2020-10-27 00:06:41,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:06:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:41,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:41,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:46,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:46,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1440 [2020-10-27 00:06:46,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:06:46,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 00:06:46,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:46,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:46,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-27 00:06:46,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 00:06:46,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:46,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:06:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:46,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:46,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:46,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:06:46,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:46,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:06:46,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:46,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:46,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:46,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:46,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:46,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:06:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:46,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:46,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:46,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:06:46,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:46,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:06:46,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:46,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:46,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:46,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:46,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:46,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:06:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:46,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:46,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:06:46,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:46,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:06:46,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:46,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:46,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:46,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:46,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:46,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:06:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:46,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:46,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:46,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:06:46,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:46,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:06:46,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:46,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:46,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:46,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:46,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:46,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:06:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:46,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:46,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:46,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:06:46,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:46,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:06:46,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:46,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:46,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:46,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:46,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:46,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:06:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:46,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:46,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:46,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:06:46,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:46,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:06:46,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:06:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 00:06:46,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:46,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-27 00:06:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:46,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:47,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:47,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:06:47,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:47,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 00:06:47,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:47,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:47,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:06:47,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:06:47,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:47,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-27 00:06:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:47,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:47,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:47,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:06:47,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:47,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 00:06:47,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:47,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:47,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:06:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:47,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:47,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 973 [2020-10-27 00:06:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:47,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:47,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:47,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:06:47,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:47,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 00:06:47,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:06:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:47,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:47,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1083 [2020-10-27 00:06:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:47,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:47,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:47,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:06:47,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:47,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 00:06:47,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:06:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:47,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:47,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:06:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:47,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:47,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:47,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:06:47,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:47,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:06:47,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:47,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:47,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:47,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:47,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:49,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4296 backedges. 868 proven. 333 refuted. 0 times theorem prover too weak. 3095 trivial. 0 not checked. [2020-10-27 00:06:49,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798307421] [2020-10-27 00:06:49,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:06:49,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:06:49,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293600752] [2020-10-27 00:06:49,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:06:49,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:06:49,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:06:49,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:06:49,082 INFO L87 Difference]: Start difference. First operand 16448 states and 18211 transitions. Second operand 7 states. [2020-10-27 00:06:54,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:06:54,933 INFO L93 Difference]: Finished difference Result 35607 states and 39688 transitions. [2020-10-27 00:06:54,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:06:54,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1410 [2020-10-27 00:06:54,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:06:54,986 INFO L225 Difference]: With dead ends: 35607 [2020-10-27 00:06:54,986 INFO L226 Difference]: Without dead ends: 19843 [2020-10-27 00:06:55,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:06:55,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19843 states. [2020-10-27 00:06:55,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19843 to 19165. [2020-10-27 00:06:55,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19165 states. [2020-10-27 00:06:55,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19165 states to 19165 states and 21215 transitions. [2020-10-27 00:06:55,381 INFO L78 Accepts]: Start accepts. Automaton has 19165 states and 21215 transitions. Word has length 1410 [2020-10-27 00:06:55,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:06:55,382 INFO L481 AbstractCegarLoop]: Abstraction has 19165 states and 21215 transitions. [2020-10-27 00:06:55,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:06:55,382 INFO L276 IsEmpty]: Start isEmpty. Operand 19165 states and 21215 transitions. [2020-10-27 00:06:55,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1480 [2020-10-27 00:06:55,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:06:55,420 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:06:55,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 00:06:55,421 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:06:55,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:06:55,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1839409838, now seen corresponding path program 1 times [2020-10-27 00:06:55,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:06:55,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730821024] [2020-10-27 00:06:55,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:06:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:55,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:55,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:56,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:59,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:00,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:00,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1511 [2020-10-27 00:07:00,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:07:00,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-27 00:07:00,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:07:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-27 00:07:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:07:00,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:00,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:07:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:00,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:00,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:00,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:07:00,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:00,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:07:00,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:07:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:00,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:00,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:07:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:00,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:01,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:01,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:07:01,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:01,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:07:01,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:01,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:01,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:07:01,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:01,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:01,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:07:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:01,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:01,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:01,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:07:01,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:01,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:07:01,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:01,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:01,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:07:01,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:01,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:01,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:07:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:01,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:01,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:01,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:07:01,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:01,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:07:01,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:07:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:01,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:01,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:07:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:01,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:01,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:01,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:07:01,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:01,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:07:01,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:01,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:01,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:07:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:01,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:01,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:07:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:01,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:01,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:01,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:07:01,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:01,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:07:01,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:07:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:07:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 00:07:01,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:01,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-27 00:07:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:01,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:01,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:01,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:07:01,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:01,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:07:01,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:01,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:07:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:07:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:07:01,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:01,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 785 [2020-10-27 00:07:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:01,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:01,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:01,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:07:01,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:01,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:07:01,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:07:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:01,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:01,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 900 [2020-10-27 00:07:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:01,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:01,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:01,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:07:01,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 00:07:01,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:01,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:07:01,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:01,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:01,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1042 [2020-10-27 00:07:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:01,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:01,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:01,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:07:01,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:01,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:07:01,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:01,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:01,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:07:01,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:01,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:01,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1152 [2020-10-27 00:07:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:01,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:02,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:02,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:07:02,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:02,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 00:07:02,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:02,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:02,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:07:02,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:02,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:02,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:07:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:02,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:02,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:02,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:07:02,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:02,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:07:02,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:02,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:02,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:07:02,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:02,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4949 backedges. 750 proven. 266 refuted. 0 times theorem prover too weak. 3933 trivial. 0 not checked. [2020-10-27 00:07:03,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730821024] [2020-10-27 00:07:03,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:07:03,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:07:03,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854406515] [2020-10-27 00:07:03,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:07:03,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:07:03,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:07:03,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:07:03,416 INFO L87 Difference]: Start difference. First operand 19165 states and 21215 transitions. Second operand 7 states. [2020-10-27 00:07:08,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:07:08,543 INFO L93 Difference]: Finished difference Result 38322 states and 42469 transitions. [2020-10-27 00:07:08,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:07:08,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1479 [2020-10-27 00:07:08,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:07:08,598 INFO L225 Difference]: With dead ends: 38322 [2020-10-27 00:07:08,598 INFO L226 Difference]: Without dead ends: 19843 [2020-10-27 00:07:08,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:07:08,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19843 states. [2020-10-27 00:07:09,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19843 to 19841. [2020-10-27 00:07:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19841 states. [2020-10-27 00:07:09,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19841 states to 19841 states and 21844 transitions. [2020-10-27 00:07:09,036 INFO L78 Accepts]: Start accepts. Automaton has 19841 states and 21844 transitions. Word has length 1479 [2020-10-27 00:07:09,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:07:09,037 INFO L481 AbstractCegarLoop]: Abstraction has 19841 states and 21844 transitions. [2020-10-27 00:07:09,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:07:09,038 INFO L276 IsEmpty]: Start isEmpty. Operand 19841 states and 21844 transitions. [2020-10-27 00:07:09,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1479 [2020-10-27 00:07:09,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:07:09,076 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-27 00:07:09,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 00:07:09,076 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:07:09,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:07:09,077 INFO L82 PathProgramCache]: Analyzing trace with hash 381151116, now seen corresponding path program 1 times [2020-10-27 00:07:09,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:07:09,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834303379] [2020-10-27 00:07:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:07:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:09,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:09,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:13,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:14,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:14,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1506 [2020-10-27 00:07:14,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:07:14,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-27 00:07:14,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:14,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:07:14,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 792 [2020-10-27 00:07:14,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 00:07:14,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:14,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:07:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:14,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:14,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:14,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:07:14,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:14,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:07:14,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:07:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:14,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:14,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:07:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:14,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:14,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:14,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:07:14,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:14,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:07:14,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:14,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:07:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:14,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:07:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:14,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:14,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:14,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 00:07:14,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:14,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:07:14,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:07:14,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:14,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:14,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-27 00:07:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:14,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:14,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:14,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 00:07:14,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:14,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 00:07:14,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:14,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:14,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:07:14,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:14,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:14,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-27 00:07:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:15,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:15,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 00:07:15,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:15,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 00:07:15,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:15,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:07:15,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:07:15,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-27 00:07:15,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:15,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-27 00:07:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:15,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:15,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:15,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:07:15,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:15,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-27 00:07:15,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:15,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:07:15,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:07:15,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:07:15,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:15,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 899 [2020-10-27 00:07:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:15,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:15,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:15,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:07:15,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:15,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:07:15,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:07:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:15,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:15,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1041 [2020-10-27 00:07:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:15,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:15,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:15,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:07:15,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:15,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:07:15,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:15,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:15,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:07:15,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:15,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:15,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1151 [2020-10-27 00:07:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:15,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:15,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:15,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:07:15,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:15,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 00:07:15,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:15,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:15,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:07:15,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:15,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:15,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:07:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:07:15,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:07:15,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:07:15,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:07:15,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:07:15,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:07:15,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:07:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:07:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:07:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:07:15,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:07:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4194 backedges. 767 proven. 333 refuted. 0 times theorem prover too weak. 3094 trivial. 0 not checked. [2020-10-27 00:07:16,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834303379] [2020-10-27 00:07:16,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:07:16,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:07:16,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302719110] [2020-10-27 00:07:16,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:07:16,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:07:16,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:07:16,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:07:16,970 INFO L87 Difference]: Start difference. First operand 19841 states and 21844 transitions. Second operand 7 states.