/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:15:25,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:15:25,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:15:25,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:15:25,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:15:25,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:15:25,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:15:25,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:15:25,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:15:25,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:15:25,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:15:25,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:15:25,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:15:25,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:15:25,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:15:25,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:15:25,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:15:25,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:15:25,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:15:25,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:15:25,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:15:25,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:15:25,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:15:25,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:15:25,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:15:25,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:15:25,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:15:25,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:15:25,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:15:25,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:15:25,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:15:25,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:15:25,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:15:25,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:15:25,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:15:25,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:15:25,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:15:25,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:15:25,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:15:25,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:15:25,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:15:25,135 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 [2020-10-29 05:15:25,191 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:15:25,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:15:25,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:15:25,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:15:25,196 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:15:25,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:15:25,196 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:15:25,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:15:25,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:15:25,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:15:25,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:15:25,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:15:25,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:15:25,198 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:15:25,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:15:25,202 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:15:25,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:15:25,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:15:25,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:15:25,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:15:25,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:15:25,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:15:25,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:15:25,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:15:25,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:15:25,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:15:25,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:15:25,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:15:25,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:15:25,204 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:15:25,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:15:25,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:15:25,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:15:25,643 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:15:25,644 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:15:25,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label51.c [2020-10-29 05:15:25,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85ab76215/83646a9122654d4fa812da3071420b54/FLAG5a18653f4 [2020-10-29 05:15:26,918 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:15:26,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label51.c [2020-10-29 05:15:26,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85ab76215/83646a9122654d4fa812da3071420b54/FLAG5a18653f4 [2020-10-29 05:15:27,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85ab76215/83646a9122654d4fa812da3071420b54 [2020-10-29 05:15:27,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:15:27,309 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:15:27,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:15:27,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:15:27,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:15:27,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:15:27" (1/1) ... [2020-10-29 05:15:27,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0f4754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:27, skipping insertion in model container [2020-10-29 05:15:27,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:15:27" (1/1) ... [2020-10-29 05:15:27,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:15:27,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:15:29,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:15:29,074 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:15:29,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:15:29,906 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:15:29,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:29 WrapperNode [2020-10-29 05:15:29,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:15:29,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:15:29,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:15:29,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:15:29,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:29" (1/1) ... [2020-10-29 05:15:29,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:29" (1/1) ... [2020-10-29 05:15:30,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:29" (1/1) ... [2020-10-29 05:15:30,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:29" (1/1) ... [2020-10-29 05:15:30,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:29" (1/1) ... [2020-10-29 05:15:30,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:29" (1/1) ... [2020-10-29 05:15:30,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:29" (1/1) ... [2020-10-29 05:15:30,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:15:30,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:15:30,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:15:30,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:15:30,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:29" (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 [2020-10-29 05:15:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:15:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:15:30,290 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:15:30,290 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:15:30,290 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:15:30,291 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:15:30,291 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:15:30,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:15:30,291 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:15:30,291 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:15:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:15:30,293 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:15:30,293 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:15:30,293 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:15:30,293 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:15:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:15:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:15:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:15:30,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:15:30,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:15:30,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:15:30,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:15:30,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:15:30,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:15:30,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:15:35,856 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:15:35,857 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:15:35,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:15:35 BoogieIcfgContainer [2020-10-29 05:15:35,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:15:35,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:15:35,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:15:35,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:15:35,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:15:27" (1/3) ... [2020-10-29 05:15:35,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5668ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:15:35, skipping insertion in model container [2020-10-29 05:15:35,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:29" (2/3) ... [2020-10-29 05:15:35,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5668ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:15:35, skipping insertion in model container [2020-10-29 05:15:35,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:15:35" (3/3) ... [2020-10-29 05:15:35,870 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label51.c [2020-10-29 05:15:35,883 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:15:35,893 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:15:35,908 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:15:35,943 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:15:35,943 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:15:35,943 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:15:35,943 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:15:35,944 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:15:35,944 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:15:35,944 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:15:35,944 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:15:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:15:36,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-29 05:15:36,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:15:36,046 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] [2020-10-29 05:15:36,046 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:15:36,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:15:36,062 INFO L82 PathProgramCache]: Analyzing trace with hash 57842388, now seen corresponding path program 1 times [2020-10-29 05:15:36,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:15:36,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846565967] [2020-10-29 05:15:36,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:15:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:37,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:41,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:42,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:42,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 816 [2020-10-29 05:15:42,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:15:42,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5330 [2020-10-29 05:15:42,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:42,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:42,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:15:42,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:15:42,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 807 [2020-10-29 05:15:42,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:15:43,223 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:15:43,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:15:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:43,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:43,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:43,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:15:43,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:43,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 05:15:43,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:43,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:15:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:15:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:15:43,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:44,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:15:44,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846565967] [2020-10-29 05:15:44,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:15:44,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:15:44,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198678552] [2020-10-29 05:15:44,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:15:44,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:15:44,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:15:44,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:15:44,246 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-29 05:15:44,488 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:15:55,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:15:55,074 INFO L93 Difference]: Finished difference Result 2677 states and 5140 transitions. [2020-10-29 05:15:55,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:15:55,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 800 [2020-10-29 05:15:55,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:15:55,115 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:15:55,115 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:15:55,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:15:55,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:15:55,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1699. [2020-10-29 05:15:55,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-10-29 05:15:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2781 transitions. [2020-10-29 05:15:55,330 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2781 transitions. Word has length 800 [2020-10-29 05:15:55,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:15:55,334 INFO L481 AbstractCegarLoop]: Abstraction has 1699 states and 2781 transitions. [2020-10-29 05:15:55,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:15:55,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2781 transitions. [2020-10-29 05:15:55,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2020-10-29 05:15:55,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:15:55,427 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 05:15:55,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:15:55,428 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:15:55,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:15:55,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1010781461, now seen corresponding path program 1 times [2020-10-29 05:15:55,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:15:55,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154019469] [2020-10-29 05:15:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:15:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:55,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:56,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:59,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:00,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:00,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 829 [2020-10-29 05:16:00,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:16:00,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 05:16:00,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:00,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:16:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 05:16:00,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-29 05:16:00,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:16:01,649 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:16:01,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:16:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:01,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:01,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:16:01,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:01,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:16:01,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:01,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:01,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:16:01,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:01,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:16:01,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:01,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:16:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:01,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:01,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:01,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:16:01,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:01,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:16:01,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:01,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:01,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:16:01,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:01,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 05:16:01,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:16:05,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154019469] [2020-10-29 05:16:05,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:16:05,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:16:05,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236606173] [2020-10-29 05:16:05,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:16:05,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:16:05,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:16:05,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:16:05,205 INFO L87 Difference]: Start difference. First operand 1699 states and 2781 transitions. Second operand 5 states. [2020-10-29 05:16:05,496 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:16:17,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:16:17,416 INFO L93 Difference]: Finished difference Result 4184 states and 7119 transitions. [2020-10-29 05:16:17,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:16:17,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 811 [2020-10-29 05:16:17,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:16:17,430 INFO L225 Difference]: With dead ends: 4184 [2020-10-29 05:16:17,430 INFO L226 Difference]: Without dead ends: 1705 [2020-10-29 05:16:17,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:16:17,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2020-10-29 05:16:17,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1699. [2020-10-29 05:16:17,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-10-29 05:16:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2063 transitions. [2020-10-29 05:16:17,500 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2063 transitions. Word has length 811 [2020-10-29 05:16:17,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:16:17,501 INFO L481 AbstractCegarLoop]: Abstraction has 1699 states and 2063 transitions. [2020-10-29 05:16:17,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:16:17,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2063 transitions. [2020-10-29 05:16:17,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2020-10-29 05:16:17,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:16:17,512 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] [2020-10-29 05:16:17,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:16:17,512 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:16:17,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:16:17,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1432247419, now seen corresponding path program 1 times [2020-10-29 05:16:17,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:16:17,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138828130] [2020-10-29 05:16:17,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:16:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:17,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:18,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:21,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:22,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:22,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 837 [2020-10-29 05:16:22,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:16:22,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 05:16:22,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:22,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:22,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:16:22,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 05:16:22,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 804 [2020-10-29 05:16:22,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:23,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:16:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:23,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:23,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:23,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:16:23,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:23,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:16:23,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:23,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:16:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:16:23,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:23,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:16:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:23,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:23,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:23,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:16:23,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:23,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:16:23,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:23,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:16:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 05:16:23,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:23,889 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:16:23,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138828130] [2020-10-29 05:16:23,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:16:23,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:16:23,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290351487] [2020-10-29 05:16:23,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:16:23,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:16:23,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:16:23,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:16:23,893 INFO L87 Difference]: Start difference. First operand 1699 states and 2063 transitions. Second operand 5 states. [2020-10-29 05:16:30,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:16:30,831 INFO L93 Difference]: Finished difference Result 5090 states and 6245 transitions. [2020-10-29 05:16:30,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:16:30,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 819 [2020-10-29 05:16:30,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:16:30,856 INFO L225 Difference]: With dead ends: 5090 [2020-10-29 05:16:30,860 INFO L226 Difference]: Without dead ends: 3397 [2020-10-29 05:16:30,865 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 [2020-10-29 05:16:30,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2020-10-29 05:16:30,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3393. [2020-10-29 05:16:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3393 states. [2020-10-29 05:16:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 4064 transitions. [2020-10-29 05:16:30,979 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 4064 transitions. Word has length 819 [2020-10-29 05:16:30,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:16:30,981 INFO L481 AbstractCegarLoop]: Abstraction has 3393 states and 4064 transitions. [2020-10-29 05:16:30,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:16:30,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 4064 transitions. [2020-10-29 05:16:30,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2020-10-29 05:16:31,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:16:31,002 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 05:16:31,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:16:31,002 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:16:31,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:16:31,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1139450591, now seen corresponding path program 1 times [2020-10-29 05:16:31,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:16:31,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784576105] [2020-10-29 05:16:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:16:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:31,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:31,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:34,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:36,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:36,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 839 [2020-10-29 05:16:36,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:16:36,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-29 05:16:36,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:36,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:16:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 05:16:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 804 [2020-10-29 05:16:36,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:36,688 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:16:36,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:16:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:36,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:36,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:16:36,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:36,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:16:36,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:36,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:36,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:16:36,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:36,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:16:36,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:36,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:16:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:36,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:36,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:36,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:16:36,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:36,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 05:16:36,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:36,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:36,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:16:36,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:36,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:16:36,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:16:37,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784576105] [2020-10-29 05:16:37,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:16:37,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:16:37,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978403182] [2020-10-29 05:16:37,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:16:37,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:16:37,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:16:37,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:16:37,750 INFO L87 Difference]: Start difference. First operand 3393 states and 4064 transitions. Second operand 6 states. [2020-10-29 05:16:37,878 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:16:38,584 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:16:49,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:16:49,496 INFO L93 Difference]: Finished difference Result 13546 states and 16714 transitions. [2020-10-29 05:16:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:16:49,497 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 821 [2020-10-29 05:16:49,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:16:49,546 INFO L225 Difference]: With dead ends: 13546 [2020-10-29 05:16:49,546 INFO L226 Difference]: Without dead ends: 10159 [2020-10-29 05:16:49,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:16:49,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10159 states. [2020-10-29 05:16:49,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10159 to 10153. [2020-10-29 05:16:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10153 states. [2020-10-29 05:16:49,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10153 states to 10153 states and 11873 transitions. [2020-10-29 05:16:49,805 INFO L78 Accepts]: Start accepts. Automaton has 10153 states and 11873 transitions. Word has length 821 [2020-10-29 05:16:49,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:16:49,806 INFO L481 AbstractCegarLoop]: Abstraction has 10153 states and 11873 transitions. [2020-10-29 05:16:49,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:16:49,806 INFO L276 IsEmpty]: Start isEmpty. Operand 10153 states and 11873 transitions. [2020-10-29 05:16:49,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2020-10-29 05:16:49,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:16:49,838 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:16:49,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:16:49,839 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:16:49,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:16:49,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1656119560, now seen corresponding path program 1 times [2020-10-29 05:16:49,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:16:49,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911597540] [2020-10-29 05:16:49,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:16:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:50,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:52,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:55,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:55,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 908 [2020-10-29 05:16:55,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:16:55,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-29 05:16:55,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:55,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:16:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-29 05:16:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 804 [2020-10-29 05:16:55,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:55,642 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:16:55,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:16:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:55,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:55,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:55,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:16:55,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:55,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:16:55,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:55,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:16:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:16:55,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:55,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:16:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:55,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:55,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:55,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 05:16:55,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:55,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:16:55,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:55,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:55,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:16:55,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:16:55,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:55,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 05:16:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:55,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:55,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:55,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 05:16:55,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:55,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 05:16:55,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:55,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:55,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:16:55,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:55,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 05:16:55,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-29 05:16:56,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911597540] [2020-10-29 05:16:56,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:16:56,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:16:56,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228863589] [2020-10-29 05:16:56,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:16:56,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:16:56,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:16:56,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:16:56,539 INFO L87 Difference]: Start difference. First operand 10153 states and 11873 transitions. Second operand 5 states. [2020-10-29 05:17:04,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:17:04,840 INFO L93 Difference]: Finished difference Result 25370 states and 30381 transitions. [2020-10-29 05:17:04,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:17:04,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 888 [2020-10-29 05:17:04,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:17:04,907 INFO L225 Difference]: With dead ends: 25370 [2020-10-29 05:17:04,907 INFO L226 Difference]: Without dead ends: 15223 [2020-10-29 05:17:04,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:17:04,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15223 states. [2020-10-29 05:17:05,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15223 to 15217. [2020-10-29 05:17:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15217 states. [2020-10-29 05:17:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15217 states to 15217 states and 17695 transitions. [2020-10-29 05:17:05,393 INFO L78 Accepts]: Start accepts. Automaton has 15217 states and 17695 transitions. Word has length 888 [2020-10-29 05:17:05,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:17:05,395 INFO L481 AbstractCegarLoop]: Abstraction has 15217 states and 17695 transitions. [2020-10-29 05:17:05,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:17:05,395 INFO L276 IsEmpty]: Start isEmpty. Operand 15217 states and 17695 transitions. [2020-10-29 05:17:05,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2020-10-29 05:17:05,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:17:05,447 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:17:05,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:17:05,447 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:17:05,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:17:05,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1293100270, now seen corresponding path program 1 times [2020-10-29 05:17:05,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:17:05,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509095452] [2020-10-29 05:17:05,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:17:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:05,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:05,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:05,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:10,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:10,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 976 [2020-10-29 05:17:10,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:17:10,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 05:17:10,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:10,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:10,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:17:10,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:17:10,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 05:17:10,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:10,770 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:17:10,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:17:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:10,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:10,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:10,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:17:10,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:10,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:17:10,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:10,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:10,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:17:10,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:10,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:17:10,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:10,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:17:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:10,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:10,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 05:17:10,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:10,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 05:17:10,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:10,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:10,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:17:10,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:17:10,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 05:17:10,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:11,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 05:17:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:11,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:11,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:11,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:17:11,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:11,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:17:11,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:11,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 05:17:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:11,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:11,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 05:17:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:11,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:11,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:11,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 05:17:11,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:11,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:17:11,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:11,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:11,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:11,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 05:17:11,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:11,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 145 proven. 33 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 05:17:11,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509095452] [2020-10-29 05:17:11,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:17:11,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:17:11,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655259099] [2020-10-29 05:17:11,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:17:11,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:17:11,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:17:11,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:17:11,518 INFO L87 Difference]: Start difference. First operand 15217 states and 17695 transitions. Second operand 8 states. [2020-10-29 05:17:11,656 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:17:20,457 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:17:21,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:17:21,474 INFO L93 Difference]: Finished difference Result 45085 states and 54441 transitions. [2020-10-29 05:17:21,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:17:21,475 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 954 [2020-10-29 05:17:21,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:17:21,613 INFO L225 Difference]: With dead ends: 45085 [2020-10-29 05:17:21,613 INFO L226 Difference]: Without dead ends: 29874 [2020-10-29 05:17:21,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 05:17:21,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29874 states. [2020-10-29 05:17:22,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29874 to 29800. [2020-10-29 05:17:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29800 states. [2020-10-29 05:17:22,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29800 states to 29800 states and 34700 transitions. [2020-10-29 05:17:22,433 INFO L78 Accepts]: Start accepts. Automaton has 29800 states and 34700 transitions. Word has length 954 [2020-10-29 05:17:22,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:17:22,434 INFO L481 AbstractCegarLoop]: Abstraction has 29800 states and 34700 transitions. [2020-10-29 05:17:22,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:17:22,434 INFO L276 IsEmpty]: Start isEmpty. Operand 29800 states and 34700 transitions. [2020-10-29 05:17:22,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2020-10-29 05:17:22,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:17:22,515 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:17:22,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:17:22,516 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:17:22,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:17:22,517 INFO L82 PathProgramCache]: Analyzing trace with hash -978555570, now seen corresponding path program 1 times [2020-10-29 05:17:22,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:17:22,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773805319] [2020-10-29 05:17:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:17:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:22,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:22,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:22,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:23,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:24,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:27,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:27,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1010 [2020-10-29 05:17:27,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:17:27,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-29 05:17:27,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:27,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:27,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:17:27,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-29 05:17:27,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 05:17:27,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:27,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:17:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:27,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:27,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:27,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:17:27,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:27,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:17:27,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:27,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:27,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:27,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:17:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:27,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:28,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:28,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 05:17:28,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:28,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:17:28,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:28,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:28,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:28,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:28,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:28,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:28,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 05:17:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:28,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:28,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:28,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 05:17:28,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:28,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 05:17:28,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:28,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:17:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 05:17:28,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:28,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-29 05:17:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:28,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:28,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:28,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 05:17:28,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:28,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 05:17:28,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:28,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:17:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:17:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 05:17:28,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:28,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 05:17:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:28,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:28,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:28,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:17:28,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:28,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:17:28,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:28,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 05:17:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:28,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:28,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-29 05:17:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:28,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:28,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:28,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 05:17:28,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:28,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:17:28,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:28,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 05:17:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:28,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 263 proven. 39 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-29 05:17:28,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773805319] [2020-10-29 05:17:28,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:17:28,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:17:28,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067735513] [2020-10-29 05:17:28,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:17:28,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:17:28,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:17:28,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:17:28,772 INFO L87 Difference]: Start difference. First operand 29800 states and 34700 transitions. Second operand 8 states. [2020-10-29 05:17:28,904 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:17:29,490 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:17:42,063 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:17:42,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:17:42,409 INFO L93 Difference]: Finished difference Result 59854 states and 70131 transitions. [2020-10-29 05:17:42,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 05:17:42,411 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 984 [2020-10-29 05:17:42,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:17:42,514 INFO L225 Difference]: With dead ends: 59854 [2020-10-29 05:17:42,514 INFO L226 Difference]: Without dead ends: 30060 [2020-10-29 05:17:42,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 05:17:42,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30060 states. [2020-10-29 05:17:43,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30060 to 29995. [2020-10-29 05:17:43,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29995 states. [2020-10-29 05:17:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29995 states to 29995 states and 33633 transitions. [2020-10-29 05:17:43,379 INFO L78 Accepts]: Start accepts. Automaton has 29995 states and 33633 transitions. Word has length 984 [2020-10-29 05:17:43,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:17:43,380 INFO L481 AbstractCegarLoop]: Abstraction has 29995 states and 33633 transitions. [2020-10-29 05:17:43,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:17:43,380 INFO L276 IsEmpty]: Start isEmpty. Operand 29995 states and 33633 transitions. [2020-10-29 05:17:43,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2020-10-29 05:17:43,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:17:43,428 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:17:43,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:17:43,428 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:17:43,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:17:43,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1669692263, now seen corresponding path program 1 times [2020-10-29 05:17:43,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:17:43,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363456283] [2020-10-29 05:17:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:17:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:43,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:43,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:43,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:47,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:48,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:48,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:48,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1009 [2020-10-29 05:17:48,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:17:48,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 05:17:48,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:48,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:17:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 05:17:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 05:17:48,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:49,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:17:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:49,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:49,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:49,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:17:49,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:17:49,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:49,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:49,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:49,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:49,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:49,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:17:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:49,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:49,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:49,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:17:49,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:49,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:17:49,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:49,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:17:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 05:17:49,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:49,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 05:17:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:49,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:49,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:49,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 05:17:49,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:49,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-29 05:17:49,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:49,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:49,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:17:49,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:17:49,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 05:17:49,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:49,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-29 05:17:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:49,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:49,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 05:17:49,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:49,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:17:49,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:49,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 05:17:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:49,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 198 proven. 27 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 05:17:50,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363456283] [2020-10-29 05:17:50,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:17:50,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:17:50,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631174266] [2020-10-29 05:17:50,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:17:50,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:17:50,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:17:50,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:17:50,352 INFO L87 Difference]: Start difference. First operand 29995 states and 33633 transitions. Second operand 8 states. [2020-10-29 05:17:50,483 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:17:53,697 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:17:59,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:17:59,531 INFO L93 Difference]: Finished difference Result 75156 states and 84465 transitions. [2020-10-29 05:17:59,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:17:59,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 987 [2020-10-29 05:17:59,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:17:59,667 INFO L225 Difference]: With dead ends: 75156 [2020-10-29 05:17:59,668 INFO L226 Difference]: Without dead ends: 45167 [2020-10-29 05:17:59,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 05:17:59,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45167 states. [2020-10-29 05:18:00,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45167 to 44253. [2020-10-29 05:18:00,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44253 states. [2020-10-29 05:18:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44253 states to 44253 states and 48714 transitions. [2020-10-29 05:18:00,687 INFO L78 Accepts]: Start accepts. Automaton has 44253 states and 48714 transitions. Word has length 987 [2020-10-29 05:18:00,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:18:00,688 INFO L481 AbstractCegarLoop]: Abstraction has 44253 states and 48714 transitions. [2020-10-29 05:18:00,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:18:00,688 INFO L276 IsEmpty]: Start isEmpty. Operand 44253 states and 48714 transitions. [2020-10-29 05:18:00,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2020-10-29 05:18:00,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:18:00,770 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:18:00,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:18:00,770 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:18:00,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:18:00,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1478230038, now seen corresponding path program 1 times [2020-10-29 05:18:00,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:18:00,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690765974] [2020-10-29 05:18:00,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:18:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:00,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:01,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:01,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:01,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:01,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:02,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:02,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:05,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:05,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1174 [2020-10-29 05:18:05,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 05:18:05,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-29 05:18:05,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:05,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:18:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 05:18:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 05:18:05,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:06,284 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:18:06,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:18:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:06,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:06,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:06,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:18:06,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:06,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:18:06,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:06,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:06,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:06,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 05:18:06,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:18:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:06,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:06,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:06,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:18:06,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:18:06,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:06,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 05:18:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:06,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 05:18:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:06,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:06,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 05:18:06,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:06,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-29 05:18:06,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:06,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:06,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:18:06,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:18:06,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-29 05:18:06,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:06,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-29 05:18:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:06,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:06,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:06,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:18:06,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:06,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:18:06,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:06,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:06,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:06,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 05:18:06,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:06,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:06,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 05:18:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:06,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:06,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:06,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:18:06,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:06,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:18:06,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:06,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:06,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:06,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 05:18:06,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:06,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:06,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-29 05:18:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:06,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:06,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:06,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 05:18:06,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:06,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 05:18:06,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:06,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:06,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:06,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-29 05:18:06,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:06,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:06,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-10-29 05:18:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:06,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:06,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:06,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:18:06,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:06,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:18:06,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:06,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:18:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:06,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:18:06,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-10-29 05:18:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:06,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:06,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:06,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 05:18:06,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:06,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:18:06,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:06,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 05:18:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:06,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 359 proven. 167 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-29 05:18:08,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690765974] [2020-10-29 05:18:08,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:18:08,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:18:08,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447542607] [2020-10-29 05:18:08,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:18:08,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:18:08,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:18:08,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:18:08,106 INFO L87 Difference]: Start difference. First operand 44253 states and 48714 transitions. Second operand 8 states. [2020-10-29 05:18:08,420 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:18:08,655 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 05:18:15,777 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 05:18:24,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:18:24,615 INFO L93 Difference]: Finished difference Result 109992 states and 124744 transitions. [2020-10-29 05:18:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 05:18:24,616 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1144 [2020-10-29 05:18:24,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:18:24,836 INFO L225 Difference]: With dead ends: 109992 [2020-10-29 05:18:24,837 INFO L226 Difference]: Without dead ends: 65745 [2020-10-29 05:18:24,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 05:18:24,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65745 states. [2020-10-29 05:18:26,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65745 to 62888. [2020-10-29 05:18:26,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62888 states. [2020-10-29 05:18:26,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62888 states to 62888 states and 68611 transitions. [2020-10-29 05:18:26,601 INFO L78 Accepts]: Start accepts. Automaton has 62888 states and 68611 transitions. Word has length 1144 [2020-10-29 05:18:26,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:18:26,602 INFO L481 AbstractCegarLoop]: Abstraction has 62888 states and 68611 transitions. [2020-10-29 05:18:26,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:18:26,602 INFO L276 IsEmpty]: Start isEmpty. Operand 62888 states and 68611 transitions. [2020-10-29 05:18:26,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1206 [2020-10-29 05:18:26,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:18:26,701 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:18:26,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 05:18:26,702 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:18:26,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:18:26,703 INFO L82 PathProgramCache]: Analyzing trace with hash -556539025, now seen corresponding path program 1 times [2020-10-29 05:18:26,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:18:26,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105060759] [2020-10-29 05:18:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:18:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:27,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:27,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:27,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:28,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:28,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:32,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:32,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1233 [2020-10-29 05:18:32,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:18:32,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 05:18:32,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:32,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:32,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:18:32,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:18:32,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 239 [2020-10-29 05:18:32,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:32,517 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:18:32,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:18:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:32,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:32,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:32,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:18:32,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:32,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:18:32,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:32,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:18:32,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:32,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:18:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:32,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:33,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:33,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-29 05:18:33,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:33,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-29 05:18:33,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:33,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:18:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:18:33,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-10-29 05:18:33,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:33,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 05:18:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:33,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:33,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:18:33,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:33,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:18:33,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:33,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:33,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 05:18:33,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:18:33,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:18:33,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:33,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-29 05:18:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:33,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:33,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:33,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:18:33,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:33,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:18:33,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:33,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:33,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 05:18:33,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:33,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:33,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-29 05:18:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:33,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:33,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:33,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 05:18:33,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:33,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 05:18:33,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:33,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-29 05:18:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:33,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:33,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-29 05:18:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:33,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:33,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:33,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:18:33,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:33,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:18:33,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:33,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:33,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:33,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:18:33,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:33,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:33,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-29 05:18:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:33,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:33,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:33,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 05:18:33,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:33,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:18:33,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:33,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 05:18:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:33,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 387 proven. 151 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-10-29 05:18:34,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105060759] [2020-10-29 05:18:34,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:18:34,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:18:34,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121569587] [2020-10-29 05:18:34,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:18:34,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:18:34,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:18:34,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:18:34,735 INFO L87 Difference]: Start difference. First operand 62888 states and 68611 transitions. Second operand 8 states. [2020-10-29 05:18:34,888 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:18:43,791 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 05:18:45,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:18:45,617 INFO L93 Difference]: Finished difference Result 141888 states and 155735 transitions. [2020-10-29 05:18:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:18:45,617 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1205 [2020-10-29 05:18:45,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:18:45,847 INFO L225 Difference]: With dead ends: 141888 [2020-10-29 05:18:45,848 INFO L226 Difference]: Without dead ends: 79006 [2020-10-29 05:18:45,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 05:18:46,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79006 states. [2020-10-29 05:18:47,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79006 to 78963. [2020-10-29 05:18:47,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78963 states. [2020-10-29 05:18:47,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78963 states to 78963 states and 86427 transitions. [2020-10-29 05:18:47,750 INFO L78 Accepts]: Start accepts. Automaton has 78963 states and 86427 transitions. Word has length 1205 [2020-10-29 05:18:47,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:18:47,751 INFO L481 AbstractCegarLoop]: Abstraction has 78963 states and 86427 transitions. [2020-10-29 05:18:47,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:18:47,751 INFO L276 IsEmpty]: Start isEmpty. Operand 78963 states and 86427 transitions. [2020-10-29 05:18:47,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1232 [2020-10-29 05:18:47,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:18:47,893 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:18:47,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 05:18:47,894 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:18:47,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:18:47,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1291583343, now seen corresponding path program 1 times [2020-10-29 05:18:47,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:18:47,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269857266] [2020-10-29 05:18:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:18:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:48,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:48,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:48,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:49,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:49,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:53,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:53,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1261 [2020-10-29 05:18:53,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:18:53,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 05:18:53,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:53,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:18:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 05:18:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 256 [2020-10-29 05:18:53,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:53,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:18:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:53,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:53,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:53,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:18:53,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:53,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:18:53,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:53,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:53,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:53,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:18:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:53,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:53,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:53,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 05:18:53,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:53,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:18:53,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:53,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:53,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:53,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:53,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:18:53,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:53,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 05:18:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:53,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:53,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:53,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:53,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-29 05:18:53,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:18:53,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-29 05:18:53,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:53,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 228 [2020-10-29 05:18:53,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:53,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 05:18:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:53,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:54,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:54,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:18:54,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:54,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:18:54,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:54,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:18:54,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:54,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-10-29 05:18:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:54,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:54,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:54,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:18:54,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:54,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:18:54,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:54,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:18:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:18:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:18:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:54,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-29 05:18:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:54,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:54,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:54,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 05:18:54,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 05:18:54,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:54,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-29 05:18:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:54,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-29 05:18:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:54,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:54,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:54,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:18:54,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:54,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:18:54,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:54,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:18:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:54,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:54,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-10-29 05:18:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:54,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:54,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:54,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 05:18:54,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:54,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:18:54,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:54,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:54,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:54,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 05:18:54,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:54,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 458 proven. 46 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-29 05:18:55,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269857266] [2020-10-29 05:18:55,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:18:55,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:18:55,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215118861] [2020-10-29 05:18:55,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:18:55,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:18:55,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:18:55,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:18:55,110 INFO L87 Difference]: Start difference. First operand 78963 states and 86427 transitions. Second operand 7 states. [2020-10-29 05:18:55,241 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:19:00,369 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94