/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:00:46,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:00:46,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:00:46,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:00:46,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:00:46,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:00:46,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:00:46,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:00:46,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:00:46,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:00:46,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:00:46,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:00:46,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:00:46,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:00:46,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:00:46,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:00:46,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:00:46,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:00:46,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:00:46,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:00:46,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:00:46,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:00:46,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:00:46,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:00:46,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:00:46,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:00:46,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:00:46,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:00:46,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:00:46,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:00:46,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:00:46,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:00:46,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:00:46,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:00:46,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:00:46,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:00:46,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:00:46,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:00:46,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:00:46,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:00:46,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:00:46,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 15:00:46,890 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:00:46,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:00:46,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:00:46,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:00:46,895 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:00:46,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:00:46,895 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:00:46,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:00:46,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:00:46,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:00:46,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:00:46,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:00:46,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:00:46,897 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:00:46,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:00:46,898 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:00:46,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:00:46,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:00:46,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:00:46,899 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:00:46,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:00:46,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:00:46,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:00:46,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:00:46,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:00:46,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:00:46,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:00:46,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:00:46,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:00:46,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:00:47,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:00:47,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:00:47,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:00:47,379 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:00:47,380 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:00:47,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c [2020-10-27 15:00:47,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9874c68ce/685a71c2169748e88350fe8128aeccf1/FLAGdfbbd4440 [2020-10-27 15:00:48,081 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:00:48,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c [2020-10-27 15:00:48,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9874c68ce/685a71c2169748e88350fe8128aeccf1/FLAGdfbbd4440 [2020-10-27 15:00:48,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9874c68ce/685a71c2169748e88350fe8128aeccf1 [2020-10-27 15:00:48,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:00:48,427 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:00:48,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:00:48,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:00:48,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:00:48,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:00:48" (1/1) ... [2020-10-27 15:00:48,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448cae16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:00:48, skipping insertion in model container [2020-10-27 15:00:48,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:00:48" (1/1) ... [2020-10-27 15:00:48,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:00:48,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:00:48,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:00:48,717 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:00:48,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:00:48,796 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:00:48,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:00:48 WrapperNode [2020-10-27 15:00:48,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:00:48,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:00:48,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:00:48,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:00:48,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:00:48" (1/1) ... [2020-10-27 15:00:48,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:00:48" (1/1) ... [2020-10-27 15:00:48,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:00:48" (1/1) ... [2020-10-27 15:00:48,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:00:48" (1/1) ... [2020-10-27 15:00:48,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:00:48" (1/1) ... [2020-10-27 15:00:48,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:00:48" (1/1) ... [2020-10-27 15:00:48,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:00:48" (1/1) ... [2020-10-27 15:00:48,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:00:48,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:00:48,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:00:48,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:00:48,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:00:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:00:48,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:00:48,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:00:48,967 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:00:48,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_connect [2020-10-27 15:00:48,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:00:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:00:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:00:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:00:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:00:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:00:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 15:00:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_connect [2020-10-27 15:00:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:00:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:00:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:00:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:00:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:00:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:00:48,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:00:49,244 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 15:00:49,925 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-27 15:00:49,925 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-27 15:00:49,939 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:00:49,939 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:00:49,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:00:49 BoogieIcfgContainer [2020-10-27 15:00:49,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:00:49,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:00:49,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:00:49,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:00:49,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:00:48" (1/3) ... [2020-10-27 15:00:49,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a8c42c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:00:49, skipping insertion in model container [2020-10-27 15:00:49,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:00:48" (2/3) ... [2020-10-27 15:00:49,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a8c42c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:00:49, skipping insertion in model container [2020-10-27 15:00:49,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:00:49" (3/3) ... [2020-10-27 15:00:49,951 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-1a.c [2020-10-27 15:00:49,964 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:00:49,969 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:00:49,983 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:00:50,011 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:00:50,011 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:00:50,011 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:00:50,012 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:00:50,012 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:00:50,012 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:00:50,012 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:00:50,012 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:00:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-10-27 15:00:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 15:00:50,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:50,043 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] [2020-10-27 15:00:50,044 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:50,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:50,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1167654252, now seen corresponding path program 1 times [2020-10-27 15:00:50,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:50,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937855977] [2020-10-27 15:00:50,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:50,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:50,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:50,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:50,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:50,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 15:00:50,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:00:50,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-27 15:00:50,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 15:00:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 15:00:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:00:50,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:50,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:50,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:50,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:50,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:50,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:00:50,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:50,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:50,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:50,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:50,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:00:50,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937855977] [2020-10-27 15:00:50,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:00:50,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:00:50,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433223964] [2020-10-27 15:00:50,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:00:50,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:51,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:00:51,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:00:51,004 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 4 states. [2020-10-27 15:00:51,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:51,676 INFO L93 Difference]: Finished difference Result 310 states and 526 transitions. [2020-10-27 15:00:51,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 15:00:51,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-27 15:00:51,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:51,689 INFO L225 Difference]: With dead ends: 310 [2020-10-27 15:00:51,689 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 15:00:51,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:00:51,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 15:00:51,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 122. [2020-10-27 15:00:51,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-27 15:00:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 181 transitions. [2020-10-27 15:00:51,754 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 181 transitions. Word has length 31 [2020-10-27 15:00:51,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:51,754 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 181 transitions. [2020-10-27 15:00:51,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:00:51,755 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 181 transitions. [2020-10-27 15:00:51,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 15:00:51,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:51,757 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 15:00:51,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:00:51,757 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:51,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:51,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1736851278, now seen corresponding path program 1 times [2020-10-27 15:00:51,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:51,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873198616] [2020-10-27 15:00:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:51,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:52,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 15:00:52,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:00:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-27 15:00:52,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 15:00:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:00:52,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:52,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:52,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:52,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:52,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:52,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:00:52,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:52,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:52,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:52,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:52,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:52,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:00:52,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873198616] [2020-10-27 15:00:52,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:00:52,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:00:52,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490649741] [2020-10-27 15:00:52,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:00:52,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:52,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:00:52,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:00:52,251 INFO L87 Difference]: Start difference. First operand 122 states and 181 transitions. Second operand 4 states. [2020-10-27 15:00:52,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:52,672 INFO L93 Difference]: Finished difference Result 244 states and 369 transitions. [2020-10-27 15:00:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 15:00:52,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-27 15:00:52,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:52,675 INFO L225 Difference]: With dead ends: 244 [2020-10-27 15:00:52,675 INFO L226 Difference]: Without dead ends: 141 [2020-10-27 15:00:52,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:00:52,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-27 15:00:52,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2020-10-27 15:00:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-27 15:00:52,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 201 transitions. [2020-10-27 15:00:52,712 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 201 transitions. Word has length 43 [2020-10-27 15:00:52,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:52,712 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 201 transitions. [2020-10-27 15:00:52,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:00:52,712 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 201 transitions. [2020-10-27 15:00:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 15:00:52,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:52,717 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:52,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:00:52,718 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:52,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:52,719 INFO L82 PathProgramCache]: Analyzing trace with hash -418959477, now seen corresponding path program 1 times [2020-10-27 15:00:52,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:52,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957856131] [2020-10-27 15:00:52,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:52,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:53,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 15:00:53,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:00:53,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-27 15:00:53,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 15:00:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 15:00:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:53,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:53,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:53,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:53,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:53,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:53,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:53,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:53,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:53,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 15:00:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 15:00:53,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957856131] [2020-10-27 15:00:53,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:00:53,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:00:53,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048504237] [2020-10-27 15:00:53,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:00:53,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:53,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:00:53,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:00:53,409 INFO L87 Difference]: Start difference. First operand 137 states and 201 transitions. Second operand 4 states. [2020-10-27 15:00:53,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:53,784 INFO L93 Difference]: Finished difference Result 276 states and 413 transitions. [2020-10-27 15:00:53,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 15:00:53,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-27 15:00:53,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:53,787 INFO L225 Difference]: With dead ends: 276 [2020-10-27 15:00:53,788 INFO L226 Difference]: Without dead ends: 158 [2020-10-27 15:00:53,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:00:53,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-27 15:00:53,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2020-10-27 15:00:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-27 15:00:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 223 transitions. [2020-10-27 15:00:53,817 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 223 transitions. Word has length 57 [2020-10-27 15:00:53,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:53,819 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 223 transitions. [2020-10-27 15:00:53,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:00:53,819 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 223 transitions. [2020-10-27 15:00:53,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 15:00:53,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:53,824 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 15:00:53,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:00:53,825 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:53,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:53,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1649045877, now seen corresponding path program 1 times [2020-10-27 15:00:53,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:53,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861266178] [2020-10-27 15:00:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:53,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:54,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:54,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 15:00:54,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:00:54,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-27 15:00:54,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-27 15:00:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 15:00:54,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:54,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:54,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:54,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:54,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:54,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:54,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:54,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:54,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:54,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:54,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:54,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:00:54,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861266178] [2020-10-27 15:00:54,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:00:54,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:00:54,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706799258] [2020-10-27 15:00:54,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:00:54,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:54,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:00:54,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:00:54,186 INFO L87 Difference]: Start difference. First operand 154 states and 223 transitions. Second operand 4 states. [2020-10-27 15:00:54,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:54,570 INFO L93 Difference]: Finished difference Result 339 states and 509 transitions. [2020-10-27 15:00:54,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 15:00:54,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-10-27 15:00:54,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:54,573 INFO L225 Difference]: With dead ends: 339 [2020-10-27 15:00:54,573 INFO L226 Difference]: Without dead ends: 203 [2020-10-27 15:00:54,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:00:54,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-27 15:00:54,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 195. [2020-10-27 15:00:54,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-27 15:00:54,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 273 transitions. [2020-10-27 15:00:54,588 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 273 transitions. Word has length 74 [2020-10-27 15:00:54,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:54,589 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 273 transitions. [2020-10-27 15:00:54,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:00:54,589 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 273 transitions. [2020-10-27 15:00:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 15:00:54,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:54,591 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 15:00:54,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:00:54,592 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:54,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:54,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1783059383, now seen corresponding path program 1 times [2020-10-27 15:00:54,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:54,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58000012] [2020-10-27 15:00:54,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:54,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:54,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:54,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:54,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:54,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:54,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:54,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 15:00:54,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:00:54,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-27 15:00:54,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:54,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:54,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-27 15:00:54,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 15:00:54,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:54,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:54,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:55,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:55,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:55,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:55,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:55,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:55,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:55,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:55,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:55,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:55,016 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:00:55,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58000012] [2020-10-27 15:00:55,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:00:55,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:00:55,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591761613] [2020-10-27 15:00:55,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:00:55,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:55,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:00:55,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:00:55,020 INFO L87 Difference]: Start difference. First operand 195 states and 273 transitions. Second operand 4 states. [2020-10-27 15:00:55,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:55,521 INFO L93 Difference]: Finished difference Result 425 states and 615 transitions. [2020-10-27 15:00:55,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 15:00:55,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-10-27 15:00:55,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:55,523 INFO L225 Difference]: With dead ends: 425 [2020-10-27 15:00:55,524 INFO L226 Difference]: Without dead ends: 249 [2020-10-27 15:00:55,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:00:55,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-27 15:00:55,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 236. [2020-10-27 15:00:55,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-27 15:00:55,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 326 transitions. [2020-10-27 15:00:55,545 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 326 transitions. Word has length 74 [2020-10-27 15:00:55,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:55,545 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 326 transitions. [2020-10-27 15:00:55,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:00:55,545 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 326 transitions. [2020-10-27 15:00:55,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 15:00:55,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:55,547 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-27 15:00:55,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:00:55,548 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:55,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:55,548 INFO L82 PathProgramCache]: Analyzing trace with hash 2048138291, now seen corresponding path program 1 times [2020-10-27 15:00:55,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:55,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648766427] [2020-10-27 15:00:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:55,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:55,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:55,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:55,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:55,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:55,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:55,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 15:00:55,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:00:55,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-27 15:00:55,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 15:00:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 15:00:55,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:55,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:55,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:55,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:55,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:55,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:55,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:55,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:55,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:55,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:55,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:55,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:00:55,929 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-27 15:00:55,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648766427] [2020-10-27 15:00:55,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:00:55,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:00:55,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38733381] [2020-10-27 15:00:55,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:00:55,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:55,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:00:55,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:00:55,935 INFO L87 Difference]: Start difference. First operand 236 states and 326 transitions. Second operand 4 states. [2020-10-27 15:00:56,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:56,350 INFO L93 Difference]: Finished difference Result 477 states and 669 transitions. [2020-10-27 15:00:56,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 15:00:56,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-10-27 15:00:56,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:56,354 INFO L225 Difference]: With dead ends: 477 [2020-10-27 15:00:56,354 INFO L226 Difference]: Without dead ends: 260 [2020-10-27 15:00:56,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:00:56,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-27 15:00:56,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2020-10-27 15:00:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-27 15:00:56,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 352 transitions. [2020-10-27 15:00:56,368 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 352 transitions. Word has length 90 [2020-10-27 15:00:56,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:56,368 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 352 transitions. [2020-10-27 15:00:56,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:00:56,369 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 352 transitions. [2020-10-27 15:00:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 15:00:56,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:56,371 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2020-10-27 15:00:56,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:00:56,371 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:56,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:56,371 INFO L82 PathProgramCache]: Analyzing trace with hash -856356099, now seen corresponding path program 1 times [2020-10-27 15:00:56,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:56,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903321337] [2020-10-27 15:00:56,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:56,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:56,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 15:00:56,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:00:56,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-27 15:00:56,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 15:00:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 15:00:56,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:56,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:56,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:56,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:56,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:56,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:00:56,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 15:00:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-27 15:00:56,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903321337] [2020-10-27 15:00:56,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:00:56,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:00:56,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063847327] [2020-10-27 15:00:56,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:00:56,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:56,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:00:56,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:00:56,647 INFO L87 Difference]: Start difference. First operand 257 states and 352 transitions. Second operand 4 states. [2020-10-27 15:00:57,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:57,014 INFO L93 Difference]: Finished difference Result 730 states and 1004 transitions. [2020-10-27 15:00:57,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 15:00:57,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-27 15:00:57,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:57,021 INFO L225 Difference]: With dead ends: 730 [2020-10-27 15:00:57,022 INFO L226 Difference]: Without dead ends: 492 [2020-10-27 15:00:57,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:00:57,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-10-27 15:00:57,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 492. [2020-10-27 15:00:57,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-10-27 15:00:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 674 transitions. [2020-10-27 15:00:57,046 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 674 transitions. Word has length 110 [2020-10-27 15:00:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:57,046 INFO L481 AbstractCegarLoop]: Abstraction has 492 states and 674 transitions. [2020-10-27 15:00:57,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:00:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 674 transitions. [2020-10-27 15:00:57,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 15:00:57,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:57,049 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:57,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:00:57,049 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:57,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:57,050 INFO L82 PathProgramCache]: Analyzing trace with hash 925735507, now seen corresponding path program 1 times [2020-10-27 15:00:57,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:57,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126047334] [2020-10-27 15:00:57,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:57,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:57,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 15:00:57,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:00:57,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-27 15:00:57,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 15:00:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 15:00:57,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:57,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:57,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:57,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:57,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:57,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:57,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:57,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:57,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:57,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:57,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:57,502 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-27 15:00:57,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126047334] [2020-10-27 15:00:57,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:00:57,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:00:57,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153705914] [2020-10-27 15:00:57,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:00:57,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:57,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:00:57,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:00:57,505 INFO L87 Difference]: Start difference. First operand 492 states and 674 transitions. Second operand 4 states. [2020-10-27 15:00:57,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:57,835 INFO L93 Difference]: Finished difference Result 990 states and 1354 transitions. [2020-10-27 15:00:57,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 15:00:57,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-27 15:00:57,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:57,839 INFO L225 Difference]: With dead ends: 990 [2020-10-27 15:00:57,839 INFO L226 Difference]: Without dead ends: 517 [2020-10-27 15:00:57,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:00:57,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2020-10-27 15:00:57,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 517. [2020-10-27 15:00:57,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2020-10-27 15:00:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 704 transitions. [2020-10-27 15:00:57,862 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 704 transitions. Word has length 112 [2020-10-27 15:00:57,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:57,863 INFO L481 AbstractCegarLoop]: Abstraction has 517 states and 704 transitions. [2020-10-27 15:00:57,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:00:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 704 transitions. [2020-10-27 15:00:57,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 15:00:57,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:57,865 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:57,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:00:57,865 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:57,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:57,866 INFO L82 PathProgramCache]: Analyzing trace with hash 785186897, now seen corresponding path program 1 times [2020-10-27 15:00:57,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:57,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157058133] [2020-10-27 15:00:57,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:57,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:58,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:58,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 15:00:58,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:00:58,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 15:00:58,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:58,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:58,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 15:00:58,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 15:00:58,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:58,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:58,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:58,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:58,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:58,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:58,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:58,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:58,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:58,103 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-27 15:00:58,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157058133] [2020-10-27 15:00:58,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:00:58,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:00:58,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545440291] [2020-10-27 15:00:58,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:00:58,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:58,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:00:58,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:00:58,111 INFO L87 Difference]: Start difference. First operand 517 states and 704 transitions. Second operand 4 states. [2020-10-27 15:00:58,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:58,502 INFO L93 Difference]: Finished difference Result 755 states and 1031 transitions. [2020-10-27 15:00:58,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 15:00:58,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-27 15:00:58,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:58,508 INFO L225 Difference]: With dead ends: 755 [2020-10-27 15:00:58,508 INFO L226 Difference]: Without dead ends: 752 [2020-10-27 15:00:58,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:00:58,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2020-10-27 15:00:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2020-10-27 15:00:58,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2020-10-27 15:00:58,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1028 transitions. [2020-10-27 15:00:58,544 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1028 transitions. Word has length 112 [2020-10-27 15:00:58,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:58,546 INFO L481 AbstractCegarLoop]: Abstraction has 752 states and 1028 transitions. [2020-10-27 15:00:58,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:00:58,546 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1028 transitions. [2020-10-27 15:00:58,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-27 15:00:58,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:58,554 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:58,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 15:00:58,554 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:58,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:58,555 INFO L82 PathProgramCache]: Analyzing trace with hash -2086269672, now seen corresponding path program 1 times [2020-10-27 15:00:58,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:58,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859787630] [2020-10-27 15:00:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:58,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:58,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:58,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:58,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:59,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-27 15:00:59,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:00:59,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 657 [2020-10-27 15:00:59,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-27 15:00:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 15:00:59,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:59,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:59,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:59,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:59,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:59,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:59,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:59,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:59,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:59,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:59,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-10-27 15:00:59,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859787630] [2020-10-27 15:00:59,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:00:59,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:00:59,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455100409] [2020-10-27 15:00:59,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:00:59,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:59,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:00:59,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:00:59,333 INFO L87 Difference]: Start difference. First operand 752 states and 1028 transitions. Second operand 4 states. [2020-10-27 15:00:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:59,707 INFO L93 Difference]: Finished difference Result 1632 states and 2292 transitions. [2020-10-27 15:00:59,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 15:00:59,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2020-10-27 15:00:59,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:59,712 INFO L225 Difference]: With dead ends: 1632 [2020-10-27 15:00:59,712 INFO L226 Difference]: Without dead ends: 896 [2020-10-27 15:00:59,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:00:59,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-10-27 15:00:59,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 866. [2020-10-27 15:00:59,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2020-10-27 15:00:59,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1214 transitions. [2020-10-27 15:00:59,765 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1214 transitions. Word has length 180 [2020-10-27 15:00:59,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:59,765 INFO L481 AbstractCegarLoop]: Abstraction has 866 states and 1214 transitions. [2020-10-27 15:00:59,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:00:59,765 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1214 transitions. [2020-10-27 15:00:59,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-27 15:00:59,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:59,769 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:59,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 15:00:59,769 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:59,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:59,770 INFO L82 PathProgramCache]: Analyzing trace with hash 2027071670, now seen corresponding path program 2 times [2020-10-27 15:00:59,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:59,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422808031] [2020-10-27 15:00:59,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:59,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:00,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:00,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-27 15:01:00,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:01:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-27 15:01:00,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-27 15:01:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 15:01:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:00,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:00,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:00,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:00,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:00,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:01:00,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:00,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:00,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-10-27 15:01:00,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422808031] [2020-10-27 15:01:00,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:01:00,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:01:00,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482688301] [2020-10-27 15:01:00,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:01:00,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:00,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:01:00,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:01:00,571 INFO L87 Difference]: Start difference. First operand 866 states and 1214 transitions. Second operand 4 states. [2020-10-27 15:01:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:00,949 INFO L93 Difference]: Finished difference Result 1870 states and 2642 transitions. [2020-10-27 15:01:00,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 15:01:00,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 192 [2020-10-27 15:01:00,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:00,956 INFO L225 Difference]: With dead ends: 1870 [2020-10-27 15:01:00,956 INFO L226 Difference]: Without dead ends: 972 [2020-10-27 15:01:00,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:01:00,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-10-27 15:01:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 935. [2020-10-27 15:01:00,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 935 states. [2020-10-27 15:01:01,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1298 transitions. [2020-10-27 15:01:01,002 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1298 transitions. Word has length 192 [2020-10-27 15:01:01,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:01,002 INFO L481 AbstractCegarLoop]: Abstraction has 935 states and 1298 transitions. [2020-10-27 15:01:01,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:01:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1298 transitions. [2020-10-27 15:01:01,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-27 15:01:01,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:01,007 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 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] [2020-10-27 15:01:01,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 15:01:01,007 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:01,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:01,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1333155375, now seen corresponding path program 1 times [2020-10-27 15:01:01,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:01,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407022183] [2020-10-27 15:01:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:01,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:01,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-27 15:01:01,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:01:01,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-27 15:01:01,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:01,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:01,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 15:01:01,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 15:01:01,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:01,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:01,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:01,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:01,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:01,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:01,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:01,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:01,616 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-27 15:01:01,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407022183] [2020-10-27 15:01:01,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:01:01,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:01:01,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901508157] [2020-10-27 15:01:01,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:01:01,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:01,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:01:01,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:01:01,618 INFO L87 Difference]: Start difference. First operand 935 states and 1298 transitions. Second operand 4 states. [2020-10-27 15:01:02,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:02,055 INFO L93 Difference]: Finished difference Result 2145 states and 2980 transitions. [2020-10-27 15:01:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 15:01:02,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-10-27 15:01:02,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:02,063 INFO L225 Difference]: With dead ends: 2145 [2020-10-27 15:01:02,063 INFO L226 Difference]: Without dead ends: 1229 [2020-10-27 15:01:02,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:01:02,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-10-27 15:01:02,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2020-10-27 15:01:02,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2020-10-27 15:01:02,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1704 transitions. [2020-10-27 15:01:02,124 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1704 transitions. Word has length 201 [2020-10-27 15:01:02,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:02,125 INFO L481 AbstractCegarLoop]: Abstraction has 1229 states and 1704 transitions. [2020-10-27 15:01:02,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:01:02,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1704 transitions. [2020-10-27 15:01:02,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-27 15:01:02,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:02,130 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:02,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 15:01:02,131 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:02,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:02,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1190990547, now seen corresponding path program 1 times [2020-10-27 15:01:02,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:02,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121747480] [2020-10-27 15:01:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:02,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:02,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-27 15:01:02,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:01:02,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 699 [2020-10-27 15:01:02,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-27 15:01:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 15:01:02,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:02,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:02,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:02,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:02,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:02,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:01:02,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:02,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2020-10-27 15:01:02,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121747480] [2020-10-27 15:01:02,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:01:02,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:01:02,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91593841] [2020-10-27 15:01:02,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:01:02,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:02,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:01:02,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:01:02,992 INFO L87 Difference]: Start difference. First operand 1229 states and 1704 transitions. Second operand 4 states. [2020-10-27 15:01:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:03,384 INFO L93 Difference]: Finished difference Result 2635 states and 3687 transitions. [2020-10-27 15:01:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 15:01:03,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 203 [2020-10-27 15:01:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:03,393 INFO L225 Difference]: With dead ends: 2635 [2020-10-27 15:01:03,393 INFO L226 Difference]: Without dead ends: 1425 [2020-10-27 15:01:03,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:01:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2020-10-27 15:01:03,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1369. [2020-10-27 15:01:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1369 states. [2020-10-27 15:01:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1876 transitions. [2020-10-27 15:01:03,457 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1876 transitions. Word has length 203 [2020-10-27 15:01:03,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:03,457 INFO L481 AbstractCegarLoop]: Abstraction has 1369 states and 1876 transitions. [2020-10-27 15:01:03,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:01:03,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1876 transitions. [2020-10-27 15:01:03,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-27 15:01:03,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:03,463 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:03,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 15:01:03,463 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:03,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:03,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1405773319, now seen corresponding path program 1 times [2020-10-27 15:01:03,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:03,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850409154] [2020-10-27 15:01:03,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:03,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:03,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:03,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:03,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-27 15:01:03,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:01:03,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-27 15:01:03,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:03,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:03,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 15:01:03,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 15:01:03,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:03,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:03,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:03,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:03,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:03,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:03,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:03,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:03,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2020-10-27 15:01:03,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850409154] [2020-10-27 15:01:03,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:01:03,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:01:03,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232374382] [2020-10-27 15:01:03,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:01:03,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:03,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:01:03,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:01:03,783 INFO L87 Difference]: Start difference. First operand 1369 states and 1876 transitions. Second operand 4 states. [2020-10-27 15:01:04,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:04,121 INFO L93 Difference]: Finished difference Result 2719 states and 3727 transitions. [2020-10-27 15:01:04,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 15:01:04,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 203 [2020-10-27 15:01:04,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:04,130 INFO L225 Difference]: With dead ends: 2719 [2020-10-27 15:01:04,130 INFO L226 Difference]: Without dead ends: 1366 [2020-10-27 15:01:04,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:01:04,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2020-10-27 15:01:04,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1366. [2020-10-27 15:01:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1366 states. [2020-10-27 15:01:04,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1871 transitions. [2020-10-27 15:01:04,193 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1871 transitions. Word has length 203 [2020-10-27 15:01:04,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:04,193 INFO L481 AbstractCegarLoop]: Abstraction has 1366 states and 1871 transitions. [2020-10-27 15:01:04,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:01:04,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1871 transitions. [2020-10-27 15:01:04,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-27 15:01:04,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:04,199 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:04,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 15:01:04,199 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:04,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:04,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1143359639, now seen corresponding path program 1 times [2020-10-27 15:01:04,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:04,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917838022] [2020-10-27 15:01:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 15:01:04,244 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 15:01:04,244 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 15:01:04,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 15:01:04,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:01:04 BoogieIcfgContainer [2020-10-27 15:01:04,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 15:01:04,322 INFO L168 Benchmark]: Toolchain (without parser) took 15897.65 ms. Allocated memory was 125.8 MB in the beginning and 350.2 MB in the end (delta: 224.4 MB). Free memory was 100.8 MB in the beginning and 220.7 MB in the end (delta: -119.9 MB). Peak memory consumption was 105.0 MB. Max. memory is 8.0 GB. [2020-10-27 15:01:04,322 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 125.8 MB. Free memory is still 88.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 15:01:04,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.12 ms. Allocated memory is still 125.8 MB. Free memory was 100.3 MB in the beginning and 85.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 15:01:04,324 INFO L168 Benchmark]: Boogie Preprocessor took 78.02 ms. Allocated memory is still 125.8 MB. Free memory was 85.9 MB in the beginning and 83.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 15:01:04,328 INFO L168 Benchmark]: RCFGBuilder took 1062.05 ms. Allocated memory was 125.8 MB in the beginning and 167.8 MB in the end (delta: 41.9 MB). Free memory was 83.5 MB in the beginning and 113.8 MB in the end (delta: -30.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. [2020-10-27 15:01:04,329 INFO L168 Benchmark]: TraceAbstraction took 14374.78 ms. Allocated memory was 167.8 MB in the beginning and 350.2 MB in the end (delta: 182.5 MB). Free memory was 113.4 MB in the beginning and 220.7 MB in the end (delta: -107.3 MB). Peak memory consumption was 75.0 MB. Max. memory is 8.0 GB. [2020-10-27 15:01:04,334 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 125.8 MB. Free memory is still 88.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 367.12 ms. Allocated memory is still 125.8 MB. Free memory was 100.3 MB in the beginning and 85.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.02 ms. Allocated memory is still 125.8 MB. Free memory was 85.9 MB in the beginning and 83.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1062.05 ms. Allocated memory was 125.8 MB in the beginning and 167.8 MB in the end (delta: 41.9 MB). Free memory was 83.5 MB in the beginning and 113.8 MB in the end (delta: -30.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14374.78 ms. Allocated memory was 167.8 MB in the beginning and 350.2 MB in the end (delta: 182.5 MB). Free memory was 113.4 MB in the beginning and 220.7 MB in the end (delta: -107.3 MB). Peak memory consumption was 75.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseXor at line 358. Possible FailurePath: [L619] int __retres1 ; [L623] CALL ssl3_connect() [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int __retres59 ; [L68] s__state = 12292 [L69] blastFlag = 0 [L70] tmp = __VERIFIER_nondet_int() [L71] cb = 0 [L72] ret = -1 [L73] skip = 0 [L74] tmp___0 = 0 [L75] COND TRUE s__info_callback != 0 [L76] cb = s__info_callback [L84] s__in_handshake = s__in_handshake + 1 [L85] COND FALSE !(tmp___1 - 12288) [L95] COND TRUE 1 [L97] state = s__state [L98] COND TRUE s__state == 12292 [L201] s__new_session = 1 [L202] s__state = 4096 [L203] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L208] s__server = 0 [L209] COND TRUE cb != 0 [L214] COND FALSE !(s__version - 65280 != 768) [L220] s__type = 4096 [L221] COND FALSE !(s__init_buf___0 == 0) [L239] COND FALSE !(! tmp___4) [L245] COND FALSE !(! tmp___5) [L251] s__state = 4368 [L252] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L253] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND TRUE blastFlag == 0 [L260] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND FALSE !(s__bbio != s__wbio) [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND TRUE blastFlag == 1 [L285] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND TRUE blastFlag == 2 [L308] blastFlag = 3 [L312] COND FALSE !(ret <= 0) [L318] ag_Y = 61087 [L319] s__state = 4416 [L320] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L324] ret = __VERIFIER_nondet_int() [L325] COND TRUE blastFlag == 3 [L326] blastFlag = 4 [L330] COND FALSE !(ret <= 0) [L335] s__state = 4432 [L336] ag_X = (unsigned short)65535 [L337] s__init_num = 0 [L338] COND FALSE !(! tmp___6) [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L347] ret = __VERIFIER_nondet_int() [L348] COND FALSE !(blastFlag == 5) [L353] COND FALSE !(ret <= 0) [L358] s__state = ag_X ^ ag_Y [L359] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND FALSE !(blastFlag == 0) [L262] COND TRUE blastFlag == 4 [L263] blastFlag = 5 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND FALSE !(s__bbio != s__wbio) [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND FALSE !(blastFlag == 1) [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND FALSE !(blastFlag == 2) [L312] COND FALSE !(ret <= 0) [L318] ag_Y = 61087 [L319] s__state = 4416 [L320] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L324] ret = __VERIFIER_nondet_int() [L325] COND FALSE !(blastFlag == 3) [L330] COND FALSE !(ret <= 0) [L335] s__state = 4432 [L336] ag_X = (unsigned short)65535 [L337] s__init_num = 0 [L338] COND FALSE !(! tmp___6) [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L347] ret = __VERIFIER_nondet_int() [L348] COND TRUE blastFlag == 5 [L610] CALL reach_error() [L3] __assert_fail("0", "s3_clnt_2.BV.c.cil-1a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 138 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.2s, OverallIterations: 15, TraceHistogramMax: 11, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2490 SDtfs, 3826 SDslu, 115 SDs, 0 SdLazy, 2474 SolverSat, 308 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1369occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 163 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 1885 NumberOfCodeBlocks, 1885 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1668 ConstructedInterpolants, 0 QuantifiedInterpolants, 533802 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 3339/3339 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...