/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:43:43,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:43:43,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:43:43,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:43:43,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:43:43,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:43:43,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:43:43,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:43:43,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:43:43,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:43:43,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:43:43,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:43:43,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:43:43,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:43:43,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:43:43,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:43:43,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:43:43,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:43:43,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:43:43,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:43:43,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:43:43,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:43:43,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:43:43,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:43:43,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:43:43,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:43:43,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:43:43,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:43:43,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:43:43,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:43:43,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:43:43,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:43:43,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:43:43,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:43:43,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:43:43,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:43:43,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:43:43,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:43:43,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:43:43,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:43:43,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:43:43,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:43:43,178 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:43:43,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:43:43,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:43:43,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:43:43,180 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:43:43,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:43:43,181 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:43:43,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:43:43,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:43:43,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:43:43,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:43:43,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:43:43,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:43:43,182 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:43:43,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:43:43,183 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:43:43,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:43:43,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:43:43,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:43:43,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:43:43,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:43:43,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:43:43,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:43:43,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:43:43,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:43:43,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:43:43,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:43:43,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:43:43,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:43:43,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:43:43,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:43:43,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:43:43,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:43:43,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:43:43,611 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:43:43,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label37.c [2020-10-26 23:43:43,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86c0417b5/4a15497a34624dd89a15ae6ef3447c04/FLAGe7b8ca62b [2020-10-26 23:43:44,544 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:43:44,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label37.c [2020-10-26 23:43:44,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86c0417b5/4a15497a34624dd89a15ae6ef3447c04/FLAGe7b8ca62b [2020-10-26 23:43:44,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86c0417b5/4a15497a34624dd89a15ae6ef3447c04 [2020-10-26 23:43:44,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:43:44,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:43:44,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:43:44,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:43:44,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:43:44,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:43:44" (1/1) ... [2020-10-26 23:43:44,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa736ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:44, skipping insertion in model container [2020-10-26 23:43:44,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:43:44" (1/1) ... [2020-10-26 23:43:44,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:43:44,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:43:45,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:43:45,741 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:43:46,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:43:46,072 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:43:46,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:46 WrapperNode [2020-10-26 23:43:46,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:43:46,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:43:46,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:43:46,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:43:46,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:46" (1/1) ... [2020-10-26 23:43:46,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:46" (1/1) ... [2020-10-26 23:43:46,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:46" (1/1) ... [2020-10-26 23:43:46,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:46" (1/1) ... [2020-10-26 23:43:46,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:46" (1/1) ... [2020-10-26 23:43:46,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:46" (1/1) ... [2020-10-26 23:43:46,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:46" (1/1) ... [2020-10-26 23:43:46,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:43:46,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:43:46,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:43:46,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:43:46,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:43:46,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:43:46,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:43:46,444 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:43:46,445 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:43:46,445 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:43:46,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:43:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:43:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:43:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:43:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:43:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:43:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:43:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:43:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:43:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:43:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:43:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:43:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:43:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:43:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:43:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:43:49,832 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:43:49,833 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:43:49,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:43:49 BoogieIcfgContainer [2020-10-26 23:43:49,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:43:49,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:43:49,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:43:49,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:43:49,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:43:44" (1/3) ... [2020-10-26 23:43:49,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f091f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:43:49, skipping insertion in model container [2020-10-26 23:43:49,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:46" (2/3) ... [2020-10-26 23:43:49,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f091f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:43:49, skipping insertion in model container [2020-10-26 23:43:49,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:43:49" (3/3) ... [2020-10-26 23:43:49,846 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label37.c [2020-10-26 23:43:49,859 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:43:49,865 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:43:49,879 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:43:49,911 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:43:49,912 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:43:49,912 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:43:49,912 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:43:49,912 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:43:49,912 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:43:49,912 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:43:49,912 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:43:49,953 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:43:49,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 23:43:49,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:43:49,960 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] [2020-10-26 23:43:49,961 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:43:49,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:43:49,968 INFO L82 PathProgramCache]: Analyzing trace with hash -200132009, now seen corresponding path program 1 times [2020-10-26 23:43:49,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:43:49,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855409243] [2020-10-26 23:43:49,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:43:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:50,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:50,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:50,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-26 23:43:50,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:50,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-26 23:43:50,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:50,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:43:50,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:43:50,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 23:43:50,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:43:50,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:50,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:50,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:50,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:50,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:50,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:43:50,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:43:50,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:43:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:43:51,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855409243] [2020-10-26 23:43:51,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:43:51,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:43:51,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420988141] [2020-10-26 23:43:51,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:43:51,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:51,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:43:51,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:43:51,037 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:43:59,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:43:59,913 INFO L93 Difference]: Finished difference Result 1229 states and 2206 transitions. [2020-10-26 23:43:59,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:43:59,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-26 23:43:59,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:43:59,938 INFO L225 Difference]: With dead ends: 1229 [2020-10-26 23:43:59,938 INFO L226 Difference]: Without dead ends: 709 [2020-10-26 23:43:59,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:43:59,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-26 23:44:00,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 695. [2020-10-26 23:44:00,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-26 23:44:00,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1081 transitions. [2020-10-26 23:44:00,061 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1081 transitions. Word has length 27 [2020-10-26 23:44:00,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:00,062 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1081 transitions. [2020-10-26 23:44:00,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:44:00,062 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1081 transitions. [2020-10-26 23:44:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-26 23:44:00,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:00,068 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:44:00,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:44:00,068 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:00,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:00,069 INFO L82 PathProgramCache]: Analyzing trace with hash 2031441279, now seen corresponding path program 1 times [2020-10-26 23:44:00,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:00,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753396337] [2020-10-26 23:44:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:00,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:00,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:01,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:01,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:01,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-26 23:44:01,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:44:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1525 [2020-10-26 23:44:01,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:44:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:44:01,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 23:44:01,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:44:01,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:01,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:01,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:01,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:01,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:01,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:44:01,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:44:01,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:44:01,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:01,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:01,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:02,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:02,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:44:02,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:44:02,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-26 23:44:02,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:02,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:02,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:02,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:44:02,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:02,193 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:44:02,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753396337] [2020-10-26 23:44:02,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:44:02,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:44:02,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9047448] [2020-10-26 23:44:02,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:44:02,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:02,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:44:02,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:44:02,199 INFO L87 Difference]: Start difference. First operand 695 states and 1081 transitions. Second operand 7 states. [2020-10-26 23:44:17,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:17,449 INFO L93 Difference]: Finished difference Result 2037 states and 3314 transitions. [2020-10-26 23:44:17,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:44:17,452 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-26 23:44:17,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:17,464 INFO L225 Difference]: With dead ends: 2037 [2020-10-26 23:44:17,464 INFO L226 Difference]: Without dead ends: 1348 [2020-10-26 23:44:17,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:44:17,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2020-10-26 23:44:17,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1335. [2020-10-26 23:44:17,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-10-26 23:44:17,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1891 transitions. [2020-10-26 23:44:17,545 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1891 transitions. Word has length 97 [2020-10-26 23:44:17,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:17,546 INFO L481 AbstractCegarLoop]: Abstraction has 1335 states and 1891 transitions. [2020-10-26 23:44:17,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:44:17,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1891 transitions. [2020-10-26 23:44:17,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-26 23:44:17,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:17,551 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:44:17,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:44:17,551 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:17,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:17,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1431502148, now seen corresponding path program 1 times [2020-10-26 23:44:17,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:17,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139120392] [2020-10-26 23:44:17,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:17,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:18,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:18,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:18,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 23:44:18,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:44:18,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1190 [2020-10-26 23:44:18,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:18,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:44:18,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:44:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-26 23:44:18,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:44:18,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:18,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:18,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:18,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:18,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:18,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:44:18,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:18,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:18,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:18,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:44:18,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:19,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:19,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:19,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:19,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:44:19,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:19,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-26 23:44:19,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:19,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:19,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:19,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:44:19,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:44:19,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139120392] [2020-10-26 23:44:19,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:44:19,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:44:19,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872726573] [2020-10-26 23:44:19,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:44:19,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:19,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:44:19,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:44:19,426 INFO L87 Difference]: Start difference. First operand 1335 states and 1891 transitions. Second operand 7 states. [2020-10-26 23:44:30,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:30,847 INFO L93 Difference]: Finished difference Result 3370 states and 5022 transitions. [2020-10-26 23:44:30,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:44:30,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-26 23:44:30,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:30,870 INFO L225 Difference]: With dead ends: 3370 [2020-10-26 23:44:30,870 INFO L226 Difference]: Without dead ends: 2348 [2020-10-26 23:44:30,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:44:30,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2020-10-26 23:44:30,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 1999. [2020-10-26 23:44:30,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1999 states. [2020-10-26 23:44:30,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 2651 transitions. [2020-10-26 23:44:30,956 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 2651 transitions. Word has length 110 [2020-10-26 23:44:30,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:30,957 INFO L481 AbstractCegarLoop]: Abstraction has 1999 states and 2651 transitions. [2020-10-26 23:44:30,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:44:30,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 2651 transitions. [2020-10-26 23:44:30,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-26 23:44:30,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:30,971 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:44:30,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:44:30,971 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:30,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:30,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1065773493, now seen corresponding path program 1 times [2020-10-26 23:44:30,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:30,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619127365] [2020-10-26 23:44:30,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:31,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:31,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:31,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:36,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:36,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-26 23:44:36,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:44:36,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 23:44:36,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:44:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:44:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:44:36,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:36,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:36,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:36,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:36,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:36,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:36,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:44:36,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:44:36,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:36,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:36,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:36,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:36,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:44:36,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:36,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-26 23:44:36,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:44:36,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:44:37,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:44:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:37,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:37,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:37,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:44:37,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:37,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:44:37,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:44:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:37,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:37,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-26 23:44:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:37,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:37,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:37,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:44:37,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:37,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:44:37,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:37,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-26 23:44:37,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:37,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:37,839 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 57 proven. 149 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-26 23:44:37,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619127365] [2020-10-26 23:44:37,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:44:37,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:44:37,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588543240] [2020-10-26 23:44:37,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:44:37,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:37,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:44:37,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:44:37,843 INFO L87 Difference]: Start difference. First operand 1999 states and 2651 transitions. Second operand 7 states. [2020-10-26 23:44:49,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:49,427 INFO L93 Difference]: Finished difference Result 4360 states and 5712 transitions. [2020-10-26 23:44:49,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:44:49,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 386 [2020-10-26 23:44:49,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:49,449 INFO L225 Difference]: With dead ends: 4360 [2020-10-26 23:44:49,449 INFO L226 Difference]: Without dead ends: 2367 [2020-10-26 23:44:49,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:44:49,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2020-10-26 23:44:49,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2307. [2020-10-26 23:44:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2307 states. [2020-10-26 23:44:49,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 2969 transitions. [2020-10-26 23:44:49,538 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 2969 transitions. Word has length 386 [2020-10-26 23:44:49,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:49,539 INFO L481 AbstractCegarLoop]: Abstraction has 2307 states and 2969 transitions. [2020-10-26 23:44:49,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:44:49,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 2969 transitions. [2020-10-26 23:44:49,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-10-26 23:44:49,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:49,552 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:44:49,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:44:49,552 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:49,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:49,553 INFO L82 PathProgramCache]: Analyzing trace with hash 2087625932, now seen corresponding path program 1 times [2020-10-26 23:44:49,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:49,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000372878] [2020-10-26 23:44:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:49,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:50,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:51,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:52,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:54,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:54,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-26 23:44:54,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:44:54,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 23:44:54,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:54,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:54,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:44:54,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:44:54,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:54,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:54,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:54,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:54,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:54,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:54,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:44:54,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:54,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:54,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:54,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:54,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:54,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:55,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:55,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:55,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:44:55,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:55,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-26 23:44:55,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:55,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:55,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:55,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:44:55,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:55,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:44:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:55,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:55,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:55,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:44:55,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:55,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-26 23:44:55,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:44:55,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:55,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-26 23:44:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:55,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:55,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:55,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:44:55,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:55,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:44:55,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-26 23:44:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:55,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 138 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-26 23:44:56,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000372878] [2020-10-26 23:44:56,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:44:56,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:44:56,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543962331] [2020-10-26 23:44:56,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:44:56,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:56,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:44:56,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:44:56,264 INFO L87 Difference]: Start difference. First operand 2307 states and 2969 transitions. Second operand 7 states. [2020-10-26 23:45:12,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:12,472 INFO L93 Difference]: Finished difference Result 5005 states and 6647 transitions. [2020-10-26 23:45:12,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:45:12,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 460 [2020-10-26 23:45:12,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:12,491 INFO L225 Difference]: With dead ends: 5005 [2020-10-26 23:45:12,492 INFO L226 Difference]: Without dead ends: 3011 [2020-10-26 23:45:12,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:45:12,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2020-10-26 23:45:12,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 2978. [2020-10-26 23:45:12,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2978 states. [2020-10-26 23:45:12,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 3761 transitions. [2020-10-26 23:45:12,607 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 3761 transitions. Word has length 460 [2020-10-26 23:45:12,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:12,608 INFO L481 AbstractCegarLoop]: Abstraction has 2978 states and 3761 transitions. [2020-10-26 23:45:12,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:45:12,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 3761 transitions. [2020-10-26 23:45:12,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-26 23:45:12,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:12,624 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:12,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:45:12,624 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:12,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:12,625 INFO L82 PathProgramCache]: Analyzing trace with hash 233527881, now seen corresponding path program 1 times [2020-10-26 23:45:12,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:12,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842854238] [2020-10-26 23:45:12,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:12,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:13,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:13,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:14,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:15,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:17,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:17,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-26 23:45:17,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:45:17,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-26 23:45:17,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:17,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:45:17,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:45:17,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-26 23:45:17,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:17,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:17,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:17,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:17,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:17,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:17,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:45:17,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:17,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:17,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:45:17,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:18,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:18,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:18,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:45:18,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:18,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:45:18,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:18,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:18,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:18,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:45:18,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:18,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:45:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:18,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:18,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:18,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:45:18,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:45:18,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-10-26 23:45:18,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:18,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:18,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:18,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:45:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:45:19,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:45:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:19,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:19,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:19,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:45:19,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:19,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:45:19,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:45:19,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:19,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-26 23:45:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:19,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:19,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:19,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:45:19,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:45:19,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:19,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-26 23:45:19,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:19,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 326 proven. 156 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-26 23:45:19,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842854238] [2020-10-26 23:45:19,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:19,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:45:19,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287042600] [2020-10-26 23:45:19,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:45:19,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:19,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:45:19,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:45:19,671 INFO L87 Difference]: Start difference. First operand 2978 states and 3761 transitions. Second operand 8 states. [2020-10-26 23:45:36,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:36,289 INFO L93 Difference]: Finished difference Result 9224 states and 12219 transitions. [2020-10-26 23:45:36,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:45:36,291 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 481 [2020-10-26 23:45:36,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:36,324 INFO L225 Difference]: With dead ends: 9224 [2020-10-26 23:45:36,324 INFO L226 Difference]: Without dead ends: 5271 [2020-10-26 23:45:36,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:45:36,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5271 states. [2020-10-26 23:45:36,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5271 to 5193. [2020-10-26 23:45:36,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5193 states. [2020-10-26 23:45:36,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 6040 transitions. [2020-10-26 23:45:36,547 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 6040 transitions. Word has length 481 [2020-10-26 23:45:36,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:36,547 INFO L481 AbstractCegarLoop]: Abstraction has 5193 states and 6040 transitions. [2020-10-26 23:45:36,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:45:36,548 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 6040 transitions. [2020-10-26 23:45:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2020-10-26 23:45:36,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:36,554 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:36,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:45:36,554 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:36,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:36,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1835988099, now seen corresponding path program 1 times [2020-10-26 23:45:36,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:36,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122451423] [2020-10-26 23:45:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:36,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:36,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:39,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:39,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:41,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:41,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 507 [2020-10-26 23:45:41,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:45:41,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 23:45:41,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:45:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:45:41,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:41,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:41,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:41,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:41,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:41,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:41,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:45:41,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:41,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:41,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:41,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:41,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:41,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:42,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:42,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:42,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:45:42,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:42,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-26 23:45:42,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:42,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:42,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:42,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:45:42,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:42,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:45:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:42,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:42,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:42,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:42,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:42,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-26 23:45:42,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:42,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:42,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:42,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:45:42,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:43,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:45:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:43,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:43,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:43,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:45:43,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:43,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:45:43,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-26 23:45:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:43,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 169 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-26 23:45:43,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122451423] [2020-10-26 23:45:43,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:43,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:45:43,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470457039] [2020-10-26 23:45:43,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:45:43,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:43,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:45:43,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:45:43,533 INFO L87 Difference]: Start difference. First operand 5193 states and 6040 transitions. Second operand 7 states. [2020-10-26 23:45:55,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:55,713 INFO L93 Difference]: Finished difference Result 11089 states and 12967 transitions. [2020-10-26 23:45:55,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:45:55,715 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 491 [2020-10-26 23:45:55,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:55,750 INFO L225 Difference]: With dead ends: 11089 [2020-10-26 23:45:55,751 INFO L226 Difference]: Without dead ends: 6209 [2020-10-26 23:45:55,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:45:55,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6209 states. [2020-10-26 23:45:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6209 to 6147. [2020-10-26 23:45:55,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6147 states. [2020-10-26 23:45:55,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 7062 transitions. [2020-10-26 23:45:55,964 INFO L78 Accepts]: Start accepts. Automaton has 6147 states and 7062 transitions. Word has length 491 [2020-10-26 23:45:55,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:55,965 INFO L481 AbstractCegarLoop]: Abstraction has 6147 states and 7062 transitions. [2020-10-26 23:45:55,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:45:55,965 INFO L276 IsEmpty]: Start isEmpty. Operand 6147 states and 7062 transitions. [2020-10-26 23:45:55,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2020-10-26 23:45:55,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:55,974 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:55,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:45:55,974 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:55,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:55,975 INFO L82 PathProgramCache]: Analyzing trace with hash -2000795275, now seen corresponding path program 1 times [2020-10-26 23:45:55,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:55,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706856866] [2020-10-26 23:45:55,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:56,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:56,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:58,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:59,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:59,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 519 [2020-10-26 23:45:59,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:45:59,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2943 [2020-10-26 23:45:59,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:45:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:45:59,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:59,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:59,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:59,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:59,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:59,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:59,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:45:59,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:59,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:59,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:59,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:59,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:59,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:45:59,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:59,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 23:45:59,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:59,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:59,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:59,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:59,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:59,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:45:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:59,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:59,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:59,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:59,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:59,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-26 23:45:59,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:45:59,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:59,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:45:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:59,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:59,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:59,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:45:59,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 23:45:59,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:45:59,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:46:00,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706856866] [2020-10-26 23:46:00,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:46:00,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:46:00,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40942264] [2020-10-26 23:46:00,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:46:00,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:00,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:46:00,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:46:00,128 INFO L87 Difference]: Start difference. First operand 6147 states and 7062 transitions. Second operand 7 states. [2020-10-26 23:46:12,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:12,885 INFO L93 Difference]: Finished difference Result 12949 states and 14895 transitions. [2020-10-26 23:46:12,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:46:12,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 503 [2020-10-26 23:46:12,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:12,935 INFO L225 Difference]: With dead ends: 12949 [2020-10-26 23:46:12,935 INFO L226 Difference]: Without dead ends: 7115 [2020-10-26 23:46:12,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:46:12,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7115 states. [2020-10-26 23:46:13,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7115 to 7085. [2020-10-26 23:46:13,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7085 states. [2020-10-26 23:46:13,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7085 states to 7085 states and 7810 transitions. [2020-10-26 23:46:13,175 INFO L78 Accepts]: Start accepts. Automaton has 7085 states and 7810 transitions. Word has length 503 [2020-10-26 23:46:13,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:13,176 INFO L481 AbstractCegarLoop]: Abstraction has 7085 states and 7810 transitions. [2020-10-26 23:46:13,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:46:13,177 INFO L276 IsEmpty]: Start isEmpty. Operand 7085 states and 7810 transitions. [2020-10-26 23:46:13,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-10-26 23:46:13,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:13,191 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:13,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:46:13,192 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:13,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:13,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1087778929, now seen corresponding path program 1 times [2020-10-26 23:46:13,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:13,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489083065] [2020-10-26 23:46:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:13,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:14,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:14,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:15,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:16,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:16,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 560 [2020-10-26 23:46:16,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:46:16,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2941 [2020-10-26 23:46:16,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:16,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:16,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:46:16,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 23:46:16,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:16,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:16,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:16,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:16,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:16,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:16,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:46:16,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:16,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:46:16,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:16,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:46:16,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:16,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:16,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:16,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:16,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:46:16,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:16,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:46:16,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:46:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:46:16,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:16,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:46:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:16,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:16,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:16,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:46:16,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:16,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-26 23:46:16,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:16,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:16,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:16,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:46:16,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:16,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:46:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:17,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:17,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:17,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-26 23:46:17,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 23:46:17,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:17,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 23:46:17,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:46:17,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489083065] [2020-10-26 23:46:17,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:46:17,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:46:17,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060300946] [2020-10-26 23:46:17,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:46:17,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:17,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:46:17,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:46:17,392 INFO L87 Difference]: Start difference. First operand 7085 states and 7810 transitions. Second operand 8 states. [2020-10-26 23:46:17,569 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:46:28,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:28,050 INFO L93 Difference]: Finished difference Result 13936 states and 15533 transitions. [2020-10-26 23:46:28,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:46:28,052 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 544 [2020-10-26 23:46:28,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:28,080 INFO L225 Difference]: With dead ends: 13936 [2020-10-26 23:46:28,081 INFO L226 Difference]: Without dead ends: 8392 [2020-10-26 23:46:28,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:46:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8392 states. [2020-10-26 23:46:28,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8392 to 8372. [2020-10-26 23:46:28,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8372 states. [2020-10-26 23:46:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8372 states to 8372 states and 9182 transitions. [2020-10-26 23:46:28,306 INFO L78 Accepts]: Start accepts. Automaton has 8372 states and 9182 transitions. Word has length 544 [2020-10-26 23:46:28,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:28,307 INFO L481 AbstractCegarLoop]: Abstraction has 8372 states and 9182 transitions. [2020-10-26 23:46:28,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:46:28,308 INFO L276 IsEmpty]: Start isEmpty. Operand 8372 states and 9182 transitions. [2020-10-26 23:46:28,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-10-26 23:46:28,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:28,319 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:28,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:46:28,319 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:28,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:28,320 INFO L82 PathProgramCache]: Analyzing trace with hash 240462774, now seen corresponding path program 1 times [2020-10-26 23:46:28,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:28,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714069152] [2020-10-26 23:46:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:28,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:28,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:29,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:29,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:31,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:32,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:32,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:32,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 568 [2020-10-26 23:46:32,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:46:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4011 [2020-10-26 23:46:32,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:46:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:46:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-26 23:46:32,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:32,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:32,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:32,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:32,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:32,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:32,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:46:32,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:32,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:46:32,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:32,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:46:32,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:32,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:32,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:32,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:32,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:46:32,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:32,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:46:32,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:46:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:46:32,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:32,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:46:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:32,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:33,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:33,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:46:33,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:33,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 23:46:33,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:33,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:33,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:33,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:46:33,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:33,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:46:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:33,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:33,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:33,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:33,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:33,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:46:33,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:46:33,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-26 23:46:33,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:33,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:33,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:33,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 23:46:33,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:33,600 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 271 proven. 20 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-26 23:46:33,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714069152] [2020-10-26 23:46:33,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:46:33,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:46:33,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29373545] [2020-10-26 23:46:33,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:46:33,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:33,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:46:33,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:46:33,603 INFO L87 Difference]: Start difference. First operand 8372 states and 9182 transitions. Second operand 6 states. [2020-10-26 23:46:43,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:43,315 INFO L93 Difference]: Finished difference Result 18514 states and 20767 transitions. [2020-10-26 23:46:43,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:46:43,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 552 [2020-10-26 23:46:43,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:43,353 INFO L225 Difference]: With dead ends: 18514 [2020-10-26 23:46:43,353 INFO L226 Difference]: Without dead ends: 11990 [2020-10-26 23:46:43,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:46:43,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11990 states. [2020-10-26 23:46:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11990 to 11932. [2020-10-26 23:46:43,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11932 states. [2020-10-26 23:46:43,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11932 states to 11932 states and 13234 transitions. [2020-10-26 23:46:43,637 INFO L78 Accepts]: Start accepts. Automaton has 11932 states and 13234 transitions. Word has length 552 [2020-10-26 23:46:43,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:43,638 INFO L481 AbstractCegarLoop]: Abstraction has 11932 states and 13234 transitions. [2020-10-26 23:46:43,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:46:43,638 INFO L276 IsEmpty]: Start isEmpty. Operand 11932 states and 13234 transitions. [2020-10-26 23:46:43,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2020-10-26 23:46:43,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:43,656 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:43,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:46:43,656 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:43,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:43,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1469151, now seen corresponding path program 1 times [2020-10-26 23:46:43,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:43,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316586851] [2020-10-26 23:46:43,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:44,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:44,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:45,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:48,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:48,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 648 [2020-10-26 23:46:48,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:46:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-26 23:46:48,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:46:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-26 23:46:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:49,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:49,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:49,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:49,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:49,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:49,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:46:49,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:49,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:49,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:49,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:49,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:49,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-26 23:46:49,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-26 23:46:49,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:46:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-26 23:46:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:50,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-26 23:46:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:50,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:50,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:50,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:50,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:46:50,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:46:50,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-26 23:46:50,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:46:50,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:50,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-26 23:46:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:50,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:50,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:50,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-26 23:46:50,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:50,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-26 23:46:50,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:50,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:46:50,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-10-26 23:46:50,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:46:50,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 92 proven. 494 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 23:46:52,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316586851] [2020-10-26 23:46:52,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:46:52,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:46:52,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845442947] [2020-10-26 23:46:52,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:46:52,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:52,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:46:52,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:46:52,510 INFO L87 Difference]: Start difference. First operand 11932 states and 13234 transitions. Second operand 9 states. [2020-10-26 23:46:52,770 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-10-26 23:46:54,730 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-26 23:46:54,934 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-26 23:46:56,090 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-26 23:46:57,846 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2020-10-26 23:46:59,111 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-26 23:47:06,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:06,549 INFO L93 Difference]: Finished difference Result 22139 states and 24702 transitions. [2020-10-26 23:47:06,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:47:06,555 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 632 [2020-10-26 23:47:06,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:06,592 INFO L225 Difference]: With dead ends: 22139 [2020-10-26 23:47:06,592 INFO L226 Difference]: Without dead ends: 12018 [2020-10-26 23:47:06,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-26 23:47:06,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12018 states. [2020-10-26 23:47:06,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12018 to 11956. [2020-10-26 23:47:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11956 states. [2020-10-26 23:47:06,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11956 states to 11956 states and 13282 transitions. [2020-10-26 23:47:06,873 INFO L78 Accepts]: Start accepts. Automaton has 11956 states and 13282 transitions. Word has length 632 [2020-10-26 23:47:06,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:06,874 INFO L481 AbstractCegarLoop]: Abstraction has 11956 states and 13282 transitions. [2020-10-26 23:47:06,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:47:06,874 INFO L276 IsEmpty]: Start isEmpty. Operand 11956 states and 13282 transitions. [2020-10-26 23:47:06,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2020-10-26 23:47:06,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:06,889 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:47:06,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:47:06,889 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:06,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:06,890 INFO L82 PathProgramCache]: Analyzing trace with hash 512198829, now seen corresponding path program 1 times [2020-10-26 23:47:06,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:06,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164247381] [2020-10-26 23:47:06,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:07,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:07,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:09,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:09,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 663 [2020-10-26 23:47:09,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:47:09,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2586 [2020-10-26 23:47:09,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:09,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:09,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:47:09,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-26 23:47:09,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:09,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:09,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:09,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:09,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:09,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:09,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:47:09,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:09,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:09,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:09,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:09,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:09,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:47:09,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:09,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:47:09,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:09,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:09,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:10,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:47:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:10,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:10,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:10,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:47:10,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:10,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:47:10,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:10,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:10,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:47:10,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:10,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:47:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:10,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:10,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:10,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:47:10,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:10,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-26 23:47:10,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:10,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:10,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:10,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-26 23:47:10,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 390 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:47:10,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164247381] [2020-10-26 23:47:10,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:47:10,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:47:10,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348457666] [2020-10-26 23:47:10,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:47:10,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:10,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:47:10,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:47:10,878 INFO L87 Difference]: Start difference. First operand 11956 states and 13282 transitions. Second operand 7 states. [2020-10-26 23:47:25,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:25,393 INFO L93 Difference]: Finished difference Result 27457 states and 31189 transitions. [2020-10-26 23:47:25,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:47:25,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 647 [2020-10-26 23:47:25,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:25,451 INFO L225 Difference]: With dead ends: 27457 [2020-10-26 23:47:25,451 INFO L226 Difference]: Without dead ends: 16091 [2020-10-26 23:47:25,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:47:25,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16091 states. [2020-10-26 23:47:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16091 to 16024. [2020-10-26 23:47:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16024 states. [2020-10-26 23:47:25,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16024 states to 16024 states and 17724 transitions. [2020-10-26 23:47:25,806 INFO L78 Accepts]: Start accepts. Automaton has 16024 states and 17724 transitions. Word has length 647 [2020-10-26 23:47:25,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:25,807 INFO L481 AbstractCegarLoop]: Abstraction has 16024 states and 17724 transitions. [2020-10-26 23:47:25,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:47:25,807 INFO L276 IsEmpty]: Start isEmpty. Operand 16024 states and 17724 transitions. [2020-10-26 23:47:25,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2020-10-26 23:47:25,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:25,826 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:47:25,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:47:25,827 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:25,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:25,827 INFO L82 PathProgramCache]: Analyzing trace with hash 198485837, now seen corresponding path program 1 times [2020-10-26 23:47:25,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:25,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502801342] [2020-10-26 23:47:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:26,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:26,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:26,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking...