/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=DEEPEST --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/Problem04_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:58:08,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:58:08,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:58:08,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:58:08,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:58:08,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:58:08,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:58:08,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:58:08,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:58:08,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:58:08,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:58:08,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:58:08,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:58:08,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:58:09,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:58:09,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:58:09,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:58:09,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:58:09,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:58:09,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:58:09,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:58:09,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:58:09,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:58:09,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:58:09,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:58:09,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:58:09,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:58:09,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:58:09,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:58:09,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:58:09,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:58:09,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:58:09,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:58:09,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:58:09,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:58:09,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:58:09,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:58:09,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:58:09,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:58:09,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:58:09,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:58:09,055 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 15:58:09,081 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:58:09,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:58:09,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:58:09,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:58:09,083 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:58:09,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:58:09,083 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:58:09,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:58:09,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:58:09,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:58:09,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:58:09,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:58:09,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:58:09,085 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:58:09,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:58:09,085 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:58:09,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:58:09,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:58:09,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:58:09,086 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:58:09,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:58:09,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:58:09,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:58:09,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:58:09,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:58:09,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:58:09,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:58:09,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:58:09,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:58:09,088 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:58:09,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:58:09,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:58:09,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:58:09,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:58:09,550 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:58:09,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label28.c [2020-10-27 15:58:09,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/998178511/3d258cd49060457695c778afee9783ad/FLAGdadefb28d [2020-10-27 15:58:10,793 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:58:10,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label28.c [2020-10-27 15:58:10,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/998178511/3d258cd49060457695c778afee9783ad/FLAGdadefb28d [2020-10-27 15:58:11,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/998178511/3d258cd49060457695c778afee9783ad [2020-10-27 15:58:11,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:58:11,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:58:11,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:58:11,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:58:11,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:58:11,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:58:11" (1/1) ... [2020-10-27 15:58:11,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a732a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:11, skipping insertion in model container [2020-10-27 15:58:11,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:58:11" (1/1) ... [2020-10-27 15:58:11,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:58:11,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:58:12,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:58:12,866 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:58:13,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:58:13,815 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:58:13,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:13 WrapperNode [2020-10-27 15:58:13,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:58:13,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:58:13,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:58:13,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:58:13,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:13" (1/1) ... [2020-10-27 15:58:13,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:13" (1/1) ... [2020-10-27 15:58:13,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:13" (1/1) ... [2020-10-27 15:58:13,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:13" (1/1) ... [2020-10-27 15:58:14,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:13" (1/1) ... [2020-10-27 15:58:14,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:13" (1/1) ... [2020-10-27 15:58:14,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:13" (1/1) ... [2020-10-27 15:58:14,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:58:14,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:58:14,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:58:14,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:58:14,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:58:14,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:58:14,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:58:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:58:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:58:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 15:58:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 15:58:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 15:58:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:58:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:58:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 15:58:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 15:58:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 15:58:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:58:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:58:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:58:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:58:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:58:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:58:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:58:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:58:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:58:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:58:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:58:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:58:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:58:19,974 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:58:19,974 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:58:19,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:58:19 BoogieIcfgContainer [2020-10-27 15:58:19,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:58:19,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:58:19,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:58:19,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:58:19,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:58:11" (1/3) ... [2020-10-27 15:58:19,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0d66ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:58:19, skipping insertion in model container [2020-10-27 15:58:19,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:58:13" (2/3) ... [2020-10-27 15:58:19,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0d66ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:58:19, skipping insertion in model container [2020-10-27 15:58:19,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:58:19" (3/3) ... [2020-10-27 15:58:19,991 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label28.c [2020-10-27 15:58:20,004 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:58:20,010 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:58:20,024 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:58:20,070 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:58:20,070 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:58:20,070 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:58:20,070 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:58:20,071 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:58:20,071 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:58:20,071 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:58:20,071 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:58:20,125 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-27 15:58:20,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2020-10-27 15:58:20,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:58:20,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:58:20,193 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:58:20,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:58:20,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1657067424, now seen corresponding path program 1 times [2020-10-27 15:58:20,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:58:20,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044152480] [2020-10-27 15:58:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:58:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:21,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:26,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:26,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 837 [2020-10-27 15:58:26,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:58:26,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-27 15:58:26,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 15:58:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:58:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 828 [2020-10-27 15:58:26,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:58:27,229 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 15:58:27,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:58:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:27,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:27,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:27,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:58:27,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:58:27,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 15:58:27,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:58:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:58:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:58:27,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:58:28,524 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 15:58:28,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044152480] [2020-10-27 15:58:28,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:58:28,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 15:58:28,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2832131] [2020-10-27 15:58:28,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:58:28,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:58:28,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:58:28,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:58:28,554 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-27 15:58:28,740 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 15:58:39,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:58:39,510 INFO L93 Difference]: Finished difference Result 2677 states and 5144 transitions. [2020-10-27 15:58:39,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:58:39,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 821 [2020-10-27 15:58:39,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:58:39,555 INFO L225 Difference]: With dead ends: 2677 [2020-10-27 15:58:39,555 INFO L226 Difference]: Without dead ends: 1703 [2020-10-27 15:58:39,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:58:39,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-27 15:58:39,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1688. [2020-10-27 15:58:39,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-10-27 15:58:39,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2956 transitions. [2020-10-27 15:58:39,750 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2956 transitions. Word has length 821 [2020-10-27 15:58:39,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:58:39,753 INFO L481 AbstractCegarLoop]: Abstraction has 1688 states and 2956 transitions. [2020-10-27 15:58:39,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:58:39,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2956 transitions. [2020-10-27 15:58:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2020-10-27 15:58:39,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:58:39,793 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:58:39,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:58:39,794 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:58:39,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:58:39,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1845698533, now seen corresponding path program 1 times [2020-10-27 15:58:39,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:58:39,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50878273] [2020-10-27 15:58:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:58:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:39,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:40,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:45,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:45,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 848 [2020-10-27 15:58:45,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:58:45,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-27 15:58:45,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:45,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 15:58:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 15:58:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 718 [2020-10-27 15:58:45,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 15:58:48,731 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-27 15:58:48,912 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-10-27 15:58:49,142 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2020-10-27 15:58:49,438 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 42 [2020-10-27 15:58:49,647 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 45 [2020-10-27 15:58:50,052 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 47 [2020-10-27 15:58:50,402 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 43 [2020-10-27 15:58:50,666 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 42 [2020-10-27 15:58:51,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:58:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:51,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:51,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:51,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:58:51,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:58:51,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:58:51,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:51,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:58:51,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:58:51,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:58:51,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:58:51,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:58:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:58:51,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:58:51,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:58:51,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:58:51,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:58:51,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 15:58:51,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:58:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:58:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:58:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 15:58:51,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:58:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:58:57,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50878273] [2020-10-27 15:58:57,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:58:57,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 15:58:57,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11401359] [2020-10-27 15:58:57,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 15:58:57,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:58:57,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 15:58:57,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-10-27 15:58:57,758 INFO L87 Difference]: Start difference. First operand 1688 states and 2956 transitions. Second operand 19 states. [2020-10-27 15:58:58,253 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 15:58:58,544 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-27 15:59:03,988 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-27 15:59:07,362 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 15:59:07,618 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 15:59:08,974 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 126 [2020-10-27 15:59:12,366 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 128 [2020-10-27 15:59:16,490 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 114 [2020-10-27 15:59:16,981 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 119 [2020-10-27 15:59:18,937 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 118 [2020-10-27 15:59:23,099 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 116 [2020-10-27 15:59:26,241 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 110 [2020-10-27 15:59:26,653 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2020-10-27 15:59:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:59:29,431 INFO L93 Difference]: Finished difference Result 4096 states and 7353 transitions. [2020-10-27 15:59:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 15:59:29,432 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 830 [2020-10-27 15:59:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:59:29,449 INFO L225 Difference]: With dead ends: 4096 [2020-10-27 15:59:29,449 INFO L226 Difference]: Without dead ends: 2414 [2020-10-27 15:59:29,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2020-10-27 15:59:29,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2020-10-27 15:59:29,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2399. [2020-10-27 15:59:29,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2399 states. [2020-10-27 15:59:29,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3677 transitions. [2020-10-27 15:59:29,549 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3677 transitions. Word has length 830 [2020-10-27 15:59:29,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:59:29,550 INFO L481 AbstractCegarLoop]: Abstraction has 2399 states and 3677 transitions. [2020-10-27 15:59:29,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 15:59:29,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3677 transitions. [2020-10-27 15:59:29,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2020-10-27 15:59:29,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:59:29,563 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:59:29,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:59:29,564 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:59:29,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:59:29,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1412095906, now seen corresponding path program 1 times [2020-10-27 15:59:29,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:59:29,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13533303] [2020-10-27 15:59:29,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:59:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:59:29,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:30,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:32,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:34,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:59:34,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 849 [2020-10-27 15:59:34,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:59:34,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-27 15:59:34,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:59:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:59:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 15:59:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-27 15:59:34,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:59:35,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:59:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:59:35,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:35,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:59:35,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:59:35,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:59:35,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:59:35,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:59:35,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:59:35,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:59:35,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:59:35,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:59:35,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:59:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:59:35,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:35,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:59:35,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:59:35,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:59:35,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:59:35,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:59:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:59:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:59:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 15:59:35,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:59:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:59:39,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13533303] [2020-10-27 15:59:39,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:59:39,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:59:39,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669778732] [2020-10-27 15:59:39,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:59:39,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:59:39,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:59:39,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:59:39,307 INFO L87 Difference]: Start difference. First operand 2399 states and 3677 transitions. Second operand 5 states. [2020-10-27 15:59:39,587 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-27 15:59:51,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:59:51,600 INFO L93 Difference]: Finished difference Result 5593 states and 8929 transitions. [2020-10-27 15:59:51,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:59:51,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 831 [2020-10-27 15:59:51,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:59:51,621 INFO L225 Difference]: With dead ends: 5593 [2020-10-27 15:59:51,621 INFO L226 Difference]: Without dead ends: 2414 [2020-10-27 15:59:51,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:59:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2020-10-27 15:59:51,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2399. [2020-10-27 15:59:51,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2399 states. [2020-10-27 15:59:51,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 2846 transitions. [2020-10-27 15:59:51,710 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 2846 transitions. Word has length 831 [2020-10-27 15:59:51,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:59:51,711 INFO L481 AbstractCegarLoop]: Abstraction has 2399 states and 2846 transitions. [2020-10-27 15:59:51,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:59:51,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 2846 transitions. [2020-10-27 15:59:51,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2020-10-27 15:59:51,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:59:51,725 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:59:51,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:59:51,725 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:59:51,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:59:51,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1891575921, now seen corresponding path program 1 times [2020-10-27 15:59:51,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:59:51,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278474497] [2020-10-27 15:59:51,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:59:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:59:52,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:52,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:55,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:56,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:59:56,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 858 [2020-10-27 15:59:56,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:59:56,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 15:59:56,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:59:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 15:59:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 15:59:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-27 15:59:56,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:59:57,954 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-27 15:59:58,072 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-27 15:59:59,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:59:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:59:59,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:59,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:59:59,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:59:59,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:59:59,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:59:59,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:59:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:59:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:59:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:59:59,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:59:59,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:59:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:59:59,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:59:59,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:59:59,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 15:59:59,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:59:59,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:59:59,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:59:59,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:59:59,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:59:59,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 15:59:59,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:00:03,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278474497] [2020-10-27 16:00:03,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:00:03,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 16:00:03,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216503338] [2020-10-27 16:00:03,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 16:00:03,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:00:03,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 16:00:03,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-27 16:00:03,510 INFO L87 Difference]: Start difference. First operand 2399 states and 2846 transitions. Second operand 19 states. [2020-10-27 16:00:04,098 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 16:00:04,334 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 16:00:04,782 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 16:00:07,702 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 16:00:08,954 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 16:00:10,797 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 122 [2020-10-27 16:00:11,508 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 16:00:11,959 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2020-10-27 16:00:13,374 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-10-27 16:00:18,242 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 16:00:18,434 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 16:00:23,966 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 16:00:24,155 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 16:00:26,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:00:26,261 INFO L93 Difference]: Finished difference Result 5503 states and 6652 transitions. [2020-10-27 16:00:26,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:00:26,262 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 840 [2020-10-27 16:00:26,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:00:26,280 INFO L225 Difference]: With dead ends: 5503 [2020-10-27 16:00:26,280 INFO L226 Difference]: Without dead ends: 3110 [2020-10-27 16:00:26,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-27 16:00:26,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2020-10-27 16:00:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 3106. [2020-10-27 16:00:26,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3106 states. [2020-10-27 16:00:26,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 3566 transitions. [2020-10-27 16:00:26,384 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 3566 transitions. Word has length 840 [2020-10-27 16:00:26,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:00:26,387 INFO L481 AbstractCegarLoop]: Abstraction has 3106 states and 3566 transitions. [2020-10-27 16:00:26,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 16:00:26,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 3566 transitions. [2020-10-27 16:00:26,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2020-10-27 16:00:26,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:00:26,404 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:26,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:00:26,404 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:00:26,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:00:26,405 INFO L82 PathProgramCache]: Analyzing trace with hash -514763582, now seen corresponding path program 1 times [2020-10-27 16:00:26,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:00:26,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141899070] [2020-10-27 16:00:26,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:00:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:26,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:26,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:30,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:31,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:31,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 865 [2020-10-27 16:00:31,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:00:31,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-27 16:00:31,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:31,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 16:00:31,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 16:00:31,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 825 [2020-10-27 16:00:31,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:32,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:00:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:32,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:32,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:32,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:00:32,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:32,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:00:32,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:00:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:00:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:00:32,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:32,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:00:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:32,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:32,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:32,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 16:00:32,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:32,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 16:00:32,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:00:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:00:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 16:00:32,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:00:32,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141899070] [2020-10-27 16:00:32,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:00:32,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:00:32,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280262841] [2020-10-27 16:00:32,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:00:32,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:00:32,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:00:32,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:00:32,788 INFO L87 Difference]: Start difference. First operand 3106 states and 3566 transitions. Second operand 5 states. [2020-10-27 16:00:40,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:00:40,985 INFO L93 Difference]: Finished difference Result 7900 states and 9336 transitions. [2020-10-27 16:00:40,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:00:40,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 847 [2020-10-27 16:00:40,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:00:41,018 INFO L225 Difference]: With dead ends: 7900 [2020-10-27 16:00:41,018 INFO L226 Difference]: Without dead ends: 4800 [2020-10-27 16:00:41,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:00:41,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4800 states. [2020-10-27 16:00:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4800 to 4796. [2020-10-27 16:00:41,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4796 states. [2020-10-27 16:00:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 5482 transitions. [2020-10-27 16:00:41,147 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 5482 transitions. Word has length 847 [2020-10-27 16:00:41,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:00:41,149 INFO L481 AbstractCegarLoop]: Abstraction has 4796 states and 5482 transitions. [2020-10-27 16:00:41,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:00:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 5482 transitions. [2020-10-27 16:00:41,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2020-10-27 16:00:41,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:00:41,173 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:41,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 16:00:41,173 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:00:41,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:00:41,174 INFO L82 PathProgramCache]: Analyzing trace with hash 423018215, now seen corresponding path program 1 times [2020-10-27 16:00:41,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:00:41,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587339724] [2020-10-27 16:00:41,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:00:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:41,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:41,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:46,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:46,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 870 [2020-10-27 16:00:46,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:00:46,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-27 16:00:46,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:00:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 16:00:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 516 [2020-10-27 16:00:46,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:48,791 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2020-10-27 16:00:48,927 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-10-27 16:00:49,055 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-10-27 16:00:49,205 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2020-10-27 16:00:49,407 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 38 [2020-10-27 16:00:49,644 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 38 [2020-10-27 16:00:49,922 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 40 [2020-10-27 16:00:50,201 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 40 [2020-10-27 16:00:50,415 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 34 [2020-10-27 16:00:50,686 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-10-27 16:00:50,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:00:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:50,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:50,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:50,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:00:50,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:50,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 16:00:50,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:50,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:00:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:00:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:00:50,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:50,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:00:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:50,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:51,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:51,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 16:00:51,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:51,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 16:00:51,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:51,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:00:51,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:00:51,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 16:00:51,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:00:55,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587339724] [2020-10-27 16:00:55,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:00:55,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 16:00:55,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033448405] [2020-10-27 16:00:55,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 16:00:55,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:00:55,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 16:00:55,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-27 16:00:55,487 INFO L87 Difference]: Start difference. First operand 4796 states and 5482 transitions. Second operand 17 states. [2020-10-27 16:00:55,942 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 16:00:56,166 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 16:00:57,788 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 16:01:00,418 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 16:01:00,665 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 16:01:02,450 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 122 [2020-10-27 16:01:03,062 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 122 [2020-10-27 16:01:04,474 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 120 [2020-10-27 16:01:06,070 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 16:01:06,339 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 16:01:06,977 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 16:01:09,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:01:09,379 INFO L93 Difference]: Finished difference Result 10099 states and 11676 transitions. [2020-10-27 16:01:09,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 16:01:09,381 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 852 [2020-10-27 16:01:09,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:01:09,404 INFO L225 Difference]: With dead ends: 10099 [2020-10-27 16:01:09,404 INFO L226 Difference]: Without dead ends: 5110 [2020-10-27 16:01:09,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-10-27 16:01:09,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5110 states. [2020-10-27 16:01:09,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5110 to 5106. [2020-10-27 16:01:09,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5106 states. [2020-10-27 16:01:09,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5106 states to 5106 states and 5797 transitions. [2020-10-27 16:01:09,528 INFO L78 Accepts]: Start accepts. Automaton has 5106 states and 5797 transitions. Word has length 852 [2020-10-27 16:01:09,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:01:09,529 INFO L481 AbstractCegarLoop]: Abstraction has 5106 states and 5797 transitions. [2020-10-27 16:01:09,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 16:01:09,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5106 states and 5797 transitions. [2020-10-27 16:01:09,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2020-10-27 16:01:09,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:01:09,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:09,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 16:01:09,551 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:01:09,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:01:09,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1549907506, now seen corresponding path program 1 times [2020-10-27 16:01:09,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:01:09,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017667594] [2020-10-27 16:01:09,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:01:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:09,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:09,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:14,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:14,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 887 [2020-10-27 16:01:14,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:01:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 16:01:14,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:01:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-27 16:01:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 621 [2020-10-27 16:01:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:16,655 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-10-27 16:01:16,784 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-10-27 16:01:16,927 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-10-27 16:01:17,077 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-10-27 16:01:17,218 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-10-27 16:01:17,374 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-10-27 16:01:17,542 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-10-27 16:01:17,679 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2020-10-27 16:01:17,823 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2020-10-27 16:01:17,996 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2020-10-27 16:01:18,185 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-10-27 16:01:18,418 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 28 [2020-10-27 16:01:18,552 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:01:18,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:01:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:18,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:18,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:18,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:01:18,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:18,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 16:01:18,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:01:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:01:18,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:18,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:01:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:18,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:18,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:18,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 16:01:18,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:18,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 16:01:18,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:01:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 16:01:18,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:01:24,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017667594] [2020-10-27 16:01:24,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:01:24,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 16:01:24,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564061605] [2020-10-27 16:01:24,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 16:01:24,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:01:24,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 16:01:24,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-27 16:01:24,138 INFO L87 Difference]: Start difference. First operand 5106 states and 5797 transitions. Second operand 17 states. [2020-10-27 16:01:24,676 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 16:01:24,927 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 16:01:25,630 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 16:01:29,168 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 16:01:29,437 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-27 16:01:30,777 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 16:01:31,887 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 16:01:33,895 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 16:01:34,137 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 16:01:34,770 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 16:01:37,280 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 16:01:38,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:01:38,775 INFO L93 Difference]: Finished difference Result 10824 states and 12442 transitions. [2020-10-27 16:01:38,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 16:01:38,779 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 869 [2020-10-27 16:01:38,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:01:38,802 INFO L225 Difference]: With dead ends: 10824 [2020-10-27 16:01:38,802 INFO L226 Difference]: Without dead ends: 5451 [2020-10-27 16:01:38,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-10-27 16:01:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5451 states. [2020-10-27 16:01:38,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5451 to 5447. [2020-10-27 16:01:38,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5447 states. [2020-10-27 16:01:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5447 states to 5447 states and 6143 transitions. [2020-10-27 16:01:38,936 INFO L78 Accepts]: Start accepts. Automaton has 5447 states and 6143 transitions. Word has length 869 [2020-10-27 16:01:38,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:01:38,937 INFO L481 AbstractCegarLoop]: Abstraction has 5447 states and 6143 transitions. [2020-10-27 16:01:38,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 16:01:38,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5447 states and 6143 transitions. [2020-10-27 16:01:38,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2020-10-27 16:01:38,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:01:38,959 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:01:38,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 16:01:38,960 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:01:38,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:01:38,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1376601510, now seen corresponding path program 1 times [2020-10-27 16:01:38,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:01:38,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679725410] [2020-10-27 16:01:38,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:01:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:39,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:39,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:41,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:41,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:44,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:44,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 927 [2020-10-27 16:01:44,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 16:01:44,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 16:01:44,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:44,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 16:01:44,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 16:01:44,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 689 [2020-10-27 16:01:44,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:46,073 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-10-27 16:01:46,210 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-10-27 16:01:46,393 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2020-10-27 16:01:46,674 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-10-27 16:01:46,900 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2020-10-27 16:01:47,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:01:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:47,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:47,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:47,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:01:47,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:47,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:01:47,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:01:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:01:47,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:47,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:01:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:47,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:47,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:47,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 16:01:47,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:47,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:01:47,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:01:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:01:47,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:47,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 16:01:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:47,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:47,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:47,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 16:01:47,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:47,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 16:01:47,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:47,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:01:47,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:47,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:01:47,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:47,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 16:01:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:47,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:47,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 16:01:47,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:47,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 16:01:47,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:47,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:01:47,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:47,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 16:01:47,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0