/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:44:12,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:44:12,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:44:12,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:44:12,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:44:12,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:44:12,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:44:12,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:44:12,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:44:12,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:44:12,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:44:12,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:44:12,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:44:12,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:44:12,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:44:12,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:44:12,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:44:12,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:44:12,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:44:12,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:44:12,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:44:12,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:44:12,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:44:12,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:44:12,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:44:12,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:44:12,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:44:12,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:44:12,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:44:12,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:44:12,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:44:12,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:44:12,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:44:12,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:44:12,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:44:12,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:44:12,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:44:12,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:44:12,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:44:12,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:44:12,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:44:12,338 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 18:44:12,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:44:12,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:44:12,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:44:12,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:44:12,396 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:44:12,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:44:12,396 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:44:12,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:44:12,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:44:12,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:44:12,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:44:12,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:44:12,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:44:12,399 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:44:12,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:44:12,399 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:44:12,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:44:12,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:44:12,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:44:12,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:44:12,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:44:12,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:44:12,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:44:12,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:44:12,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:44:12,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:44:12,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:44:12,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:44:12,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:44:12,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:44:12,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:44:12,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:44:12,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:44:12,877 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:44:12,878 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:44:12,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label45.c [2020-10-27 18:44:12,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77d9b1cec/32eec595448a4e7783275c576a7a4015/FLAG0e627f4a6 [2020-10-27 18:44:13,972 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:44:13,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label45.c [2020-10-27 18:44:14,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77d9b1cec/32eec595448a4e7783275c576a7a4015/FLAG0e627f4a6 [2020-10-27 18:44:14,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77d9b1cec/32eec595448a4e7783275c576a7a4015 [2020-10-27 18:44:14,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:44:14,045 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:44:14,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:44:14,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:44:14,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:44:14,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:44:14" (1/1) ... [2020-10-27 18:44:14,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d4cfc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:14, skipping insertion in model container [2020-10-27 18:44:14,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:44:14" (1/1) ... [2020-10-27 18:44:14,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:44:14,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:44:14,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:44:14,907 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:44:15,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:44:15,255 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:44:15,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:15 WrapperNode [2020-10-27 18:44:15,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:44:15,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:44:15,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:44:15,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:44:15,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:15" (1/1) ... [2020-10-27 18:44:15,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:15" (1/1) ... [2020-10-27 18:44:15,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:15" (1/1) ... [2020-10-27 18:44:15,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:15" (1/1) ... [2020-10-27 18:44:15,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:15" (1/1) ... [2020-10-27 18:44:15,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:15" (1/1) ... [2020-10-27 18:44:15,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:15" (1/1) ... [2020-10-27 18:44:15,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:44:15,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:44:15,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:44:15,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:44:15,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:44:15,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:44:15,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:44:15,555 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:44:15,555 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:44:15,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:44:15,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:44:15,556 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:44:15,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:44:15,557 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:44:15,557 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:44:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:44:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:44:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:44:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:44:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:44:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:44:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:44:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:44:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:44:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:44:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:44:18,959 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:44:18,959 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:44:18,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:44:18 BoogieIcfgContainer [2020-10-27 18:44:18,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:44:18,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:44:18,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:44:18,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:44:18,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:44:14" (1/3) ... [2020-10-27 18:44:18,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5752084f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:44:18, skipping insertion in model container [2020-10-27 18:44:18,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:15" (2/3) ... [2020-10-27 18:44:18,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5752084f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:44:18, skipping insertion in model container [2020-10-27 18:44:18,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:44:18" (3/3) ... [2020-10-27 18:44:18,972 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label45.c [2020-10-27 18:44:18,985 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:44:18,991 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:44:19,006 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:44:19,040 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:44:19,040 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:44:19,040 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:44:19,040 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:44:19,040 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:44:19,041 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:44:19,041 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:44:19,041 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:44:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 18:44:19,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 18:44:19,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:44:19,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:44:19,082 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:44:19,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:44:19,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1136483076, now seen corresponding path program 1 times [2020-10-27 18:44:19,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:44:19,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131583269] [2020-10-27 18:44:19,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:44:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:19,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:20,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:20,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:44:20,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:20,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-10-27 18:44:20,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:44:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:44:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 18:44:20,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:44:20,282 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 18:44:20,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:44:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:20,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:20,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:20,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:44:20,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:20,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 18:44:20,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:20,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:44:20,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:20,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:44:20,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:44:20,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131583269] [2020-10-27 18:44:20,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:44:20,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:44:20,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841723263] [2020-10-27 18:44:20,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:44:20,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:44:20,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:44:20,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:44:20,412 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-27 18:44:25,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:44:25,390 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-27 18:44:25,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:44:25,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-27 18:44:25,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:44:25,414 INFO L225 Difference]: With dead ends: 1174 [2020-10-27 18:44:25,415 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 18:44:25,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:44:25,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 18:44:25,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-27 18:44:25,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-27 18:44:25,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-27 18:44:25,553 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 60 [2020-10-27 18:44:25,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:44:25,554 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-27 18:44:25,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:44:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-27 18:44:25,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-27 18:44:25,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:44:25,567 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:44:25,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:44:25,567 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:44:25,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:44:25,569 INFO L82 PathProgramCache]: Analyzing trace with hash 2042719492, now seen corresponding path program 1 times [2020-10-27 18:44:25,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:44:25,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948510813] [2020-10-27 18:44:25,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:44:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:25,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:26,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:26,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:26,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 18:44:26,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:44:26,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1269 [2020-10-27 18:44:26,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:44:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 18:44:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 18:44:26,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:44:27,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:44:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:27,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:27,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:27,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:44:27,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:27,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:44:27,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:27,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:27,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:27,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:27,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:44:27,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:44:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:27,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:27,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:27,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:44:27,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:27,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 18:44:27,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:44:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:44:27,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:44:27,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948510813] [2020-10-27 18:44:27,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:44:27,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:44:27,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490861852] [2020-10-27 18:44:27,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:44:27,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:44:27,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:44:27,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:44:27,312 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 5 states. [2020-10-27 18:44:31,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:44:31,995 INFO L93 Difference]: Finished difference Result 1726 states and 2651 transitions. [2020-10-27 18:44:31,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:44:31,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-27 18:44:31,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:44:32,004 INFO L225 Difference]: With dead ends: 1726 [2020-10-27 18:44:32,005 INFO L226 Difference]: Without dead ends: 1039 [2020-10-27 18:44:32,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:44:32,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-27 18:44:32,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1035. [2020-10-27 18:44:32,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-27 18:44:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1430 transitions. [2020-10-27 18:44:32,094 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1430 transitions. Word has length 136 [2020-10-27 18:44:32,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:44:32,102 INFO L481 AbstractCegarLoop]: Abstraction has 1035 states and 1430 transitions. [2020-10-27 18:44:32,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:44:32,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1430 transitions. [2020-10-27 18:44:32,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-27 18:44:32,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:44:32,117 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:44:32,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:44:32,118 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:44:32,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:44:32,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1566881758, now seen corresponding path program 1 times [2020-10-27 18:44:32,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:44:32,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694705501] [2020-10-27 18:44:32,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:44:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:32,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:32,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:34,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:34,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:44:34,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:44:34,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2051 [2020-10-27 18:44:34,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:44:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-27 18:44:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 18:44:34,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:34,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:44:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:34,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:34,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:34,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:44:34,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:34,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:44:34,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:34,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:34,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:44:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:34,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:34,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:34,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 18:44:34,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:34,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-27 18:44:34,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:44:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 18:44:34,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:44:34,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694705501] [2020-10-27 18:44:34,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:44:34,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:44:34,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951154245] [2020-10-27 18:44:34,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:44:34,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:44:34,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:44:34,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:44:34,823 INFO L87 Difference]: Start difference. First operand 1035 states and 1430 transitions. Second operand 5 states. [2020-10-27 18:44:39,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:44:39,768 INFO L93 Difference]: Finished difference Result 2410 states and 3482 transitions. [2020-10-27 18:44:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:44:39,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-27 18:44:39,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:44:39,784 INFO L225 Difference]: With dead ends: 2410 [2020-10-27 18:44:39,784 INFO L226 Difference]: Without dead ends: 1381 [2020-10-27 18:44:39,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:44:39,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2020-10-27 18:44:39,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1377. [2020-10-27 18:44:39,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1377 states. [2020-10-27 18:44:39,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1850 transitions. [2020-10-27 18:44:39,843 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1850 transitions. Word has length 189 [2020-10-27 18:44:39,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:44:39,845 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1850 transitions. [2020-10-27 18:44:39,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:44:39,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1850 transitions. [2020-10-27 18:44:39,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-27 18:44:39,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:44:39,851 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:44:39,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:44:39,852 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:44:39,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:44:39,854 INFO L82 PathProgramCache]: Analyzing trace with hash 347987840, now seen corresponding path program 1 times [2020-10-27 18:44:39,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:44:39,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092015792] [2020-10-27 18:44:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:44:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:39,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:40,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:42,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:44,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:44,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 18:44:44,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:44:44,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 18:44:44,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:44,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:44:44,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-27 18:44:44,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 18:44:44,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:45,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:44:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:45,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:45,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:45,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:44:45,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:45,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:44:45,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:45,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:45,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:45,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:45,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:45,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:44:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:45,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:45,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:45,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:44:45,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:45,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:44:45,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:45,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:45,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 18:44:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:45,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:45,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:45,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:44:45,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:45,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 18:44:45,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:44:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:45,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:44:45,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 18:44:45,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092015792] [2020-10-27 18:44:45,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:44:45,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:44:45,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460574302] [2020-10-27 18:44:45,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:44:45,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:44:45,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:44:45,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:44:45,390 INFO L87 Difference]: Start difference. First operand 1377 states and 1850 transitions. Second operand 6 states. [2020-10-27 18:44:51,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:44:51,862 INFO L93 Difference]: Finished difference Result 3094 states and 4327 transitions. [2020-10-27 18:44:51,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:44:51,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 246 [2020-10-27 18:44:51,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:44:51,871 INFO L225 Difference]: With dead ends: 3094 [2020-10-27 18:44:51,872 INFO L226 Difference]: Without dead ends: 1723 [2020-10-27 18:44:51,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:44:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2020-10-27 18:44:51,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1719. [2020-10-27 18:44:51,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1719 states. [2020-10-27 18:44:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2321 transitions. [2020-10-27 18:44:51,930 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2321 transitions. Word has length 246 [2020-10-27 18:44:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:44:51,931 INFO L481 AbstractCegarLoop]: Abstraction has 1719 states and 2321 transitions. [2020-10-27 18:44:51,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:44:51,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2321 transitions. [2020-10-27 18:44:51,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-27 18:44:51,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:44:51,939 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:44:51,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:44:51,940 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:44:51,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:44:51,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1744430432, now seen corresponding path program 1 times [2020-10-27 18:44:51,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:44:51,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912785924] [2020-10-27 18:44:51,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:44:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:52,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:52,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:52,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:52,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:53,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:53,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:55,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:56,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:56,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-27 18:44:56,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:44:56,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 18:44:56,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:56,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:44:56,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-27 18:44:56,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 18:44:56,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:57,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:44:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:57,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:57,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:57,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:44:57,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:57,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:44:57,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:57,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:57,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:57,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:57,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:57,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:44:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:57,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:57,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:57,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:44:57,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:57,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:44:57,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:57,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:57,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:57,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:57,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:57,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 18:44:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:57,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:57,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:44:57,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:57,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 18:44:57,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:44:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:44:57,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:57,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 18:44:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:57,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:57,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:57,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 18:44:57,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:57,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 18:44:57,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:44:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:44:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 18:44:57,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 323 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 18:44:57,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912785924] [2020-10-27 18:44:57,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:44:57,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:44:57,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862256363] [2020-10-27 18:44:57,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:44:57,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:44:57,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:44:57,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:44:57,769 INFO L87 Difference]: Start difference. First operand 1719 states and 2321 transitions. Second operand 8 states. [2020-10-27 18:45:05,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:05,029 INFO L93 Difference]: Finished difference Result 6563 states and 8874 transitions. [2020-10-27 18:45:05,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 18:45:05,031 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 338 [2020-10-27 18:45:05,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:05,059 INFO L225 Difference]: With dead ends: 6563 [2020-10-27 18:45:05,059 INFO L226 Difference]: Without dead ends: 4850 [2020-10-27 18:45:05,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 18:45:05,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4850 states. [2020-10-27 18:45:05,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4850 to 4830. [2020-10-27 18:45:05,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4830 states. [2020-10-27 18:45:05,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4830 states to 4830 states and 5979 transitions. [2020-10-27 18:45:05,207 INFO L78 Accepts]: Start accepts. Automaton has 4830 states and 5979 transitions. Word has length 338 [2020-10-27 18:45:05,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:05,207 INFO L481 AbstractCegarLoop]: Abstraction has 4830 states and 5979 transitions. [2020-10-27 18:45:05,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:45:05,208 INFO L276 IsEmpty]: Start isEmpty. Operand 4830 states and 5979 transitions. [2020-10-27 18:45:05,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2020-10-27 18:45:05,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:05,227 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:45:05,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:45:05,228 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:05,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:05,228 INFO L82 PathProgramCache]: Analyzing trace with hash -634782846, now seen corresponding path program 1 times [2020-10-27 18:45:05,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:05,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004573859] [2020-10-27 18:45:05,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:05,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:06,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:06,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:08,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:08,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:10,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:10,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 541 [2020-10-27 18:45:10,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:45:10,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 18:45:10,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:10,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:10,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:45:10,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 18:45:10,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:10,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:10,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:10,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:10,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:10,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:10,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:45:10,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:10,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:10,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:10,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:10,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:10,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:45:10,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:10,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:45:10,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:10,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:45:10,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:45:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:10,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:11,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:11,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:45:11,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:11,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-27 18:45:11,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:11,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:45:11,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:45:11,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:45:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:11,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:11,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:11,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:45:11,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:11,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 18:45:11,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:11,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:11,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:45:11,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 18:45:11,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-27 18:45:11,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004573859] [2020-10-27 18:45:11,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:11,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:45:11,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087879056] [2020-10-27 18:45:11,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:45:11,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:11,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:45:11,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:45:11,975 INFO L87 Difference]: Start difference. First operand 4830 states and 5979 transitions. Second operand 8 states. [2020-10-27 18:45:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:22,055 INFO L93 Difference]: Finished difference Result 12736 states and 16108 transitions. [2020-10-27 18:45:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:45:22,059 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 525 [2020-10-27 18:45:22,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:22,106 INFO L225 Difference]: With dead ends: 12736 [2020-10-27 18:45:22,106 INFO L226 Difference]: Without dead ends: 7912 [2020-10-27 18:45:22,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:45:22,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7912 states. [2020-10-27 18:45:22,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7912 to 7906. [2020-10-27 18:45:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7906 states. [2020-10-27 18:45:22,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7906 states to 7906 states and 9758 transitions. [2020-10-27 18:45:22,391 INFO L78 Accepts]: Start accepts. Automaton has 7906 states and 9758 transitions. Word has length 525 [2020-10-27 18:45:22,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:22,392 INFO L481 AbstractCegarLoop]: Abstraction has 7906 states and 9758 transitions. [2020-10-27 18:45:22,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:45:22,392 INFO L276 IsEmpty]: Start isEmpty. Operand 7906 states and 9758 transitions. [2020-10-27 18:45:22,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-10-27 18:45:22,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:22,424 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:45:22,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:45:22,424 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:22,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:22,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1284892378, now seen corresponding path program 1 times [2020-10-27 18:45:22,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:22,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851260076] [2020-10-27 18:45:22,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:22,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:22,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:22,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:23,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:23,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:25,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:26,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:27,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:27,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:27,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 577 [2020-10-27 18:45:27,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 18:45:27,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 18:45:27,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:27,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:27,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 298 [2020-10-27 18:45:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 18:45:27,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:27,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:27,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:27,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:27,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:27,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:27,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:45:27,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:27,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:27,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:27,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:27,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:45:27,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:27,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:45:27,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:27,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:27,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:45:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:27,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:27,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:27,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:45:27,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:27,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:45:27,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:27,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:27,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:27,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 18:45:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:27,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:27,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:27,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:45:27,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:27,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 18:45:27,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:27,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:27,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:45:27,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:28,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-27 18:45:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:28,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:28,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:28,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:45:28,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:28,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-27 18:45:28,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:28,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:28,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:45:28,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:45:28,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 493 proven. 2 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-10-27 18:45:28,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851260076] [2020-10-27 18:45:28,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:28,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:45:28,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147540897] [2020-10-27 18:45:28,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:45:28,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:28,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:45:28,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:45:28,833 INFO L87 Difference]: Start difference. First operand 7906 states and 9758 transitions. Second operand 7 states. [2020-10-27 18:45:36,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:36,725 INFO L93 Difference]: Finished difference Result 21637 states and 27101 transitions. [2020-10-27 18:45:36,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:45:36,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 559 [2020-10-27 18:45:36,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:36,811 INFO L225 Difference]: With dead ends: 21637 [2020-10-27 18:45:36,811 INFO L226 Difference]: Without dead ends: 13737 [2020-10-27 18:45:36,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:45:36,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13737 states. [2020-10-27 18:45:37,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13737 to 13053. [2020-10-27 18:45:37,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13053 states. [2020-10-27 18:45:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13053 states to 13053 states and 15742 transitions. [2020-10-27 18:45:37,226 INFO L78 Accepts]: Start accepts. Automaton has 13053 states and 15742 transitions. Word has length 559 [2020-10-27 18:45:37,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:37,227 INFO L481 AbstractCegarLoop]: Abstraction has 13053 states and 15742 transitions. [2020-10-27 18:45:37,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:45:37,228 INFO L276 IsEmpty]: Start isEmpty. Operand 13053 states and 15742 transitions. [2020-10-27 18:45:37,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2020-10-27 18:45:37,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:37,256 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:45:37,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:45:37,256 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:37,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:37,257 INFO L82 PathProgramCache]: Analyzing trace with hash 508051896, now seen corresponding path program 1 times [2020-10-27 18:45:37,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:37,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898366423] [2020-10-27 18:45:37,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:37,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:37,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:37,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:38,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:41,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:42,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:42,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:42,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 728 [2020-10-27 18:45:42,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:45:42,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-27 18:45:42,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:45:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:45:42,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:42,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:42,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:42,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:42,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:42,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:42,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:45:42,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:42,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:42,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:42,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:42,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:42,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:42,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:42,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:42,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:45:42,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:42,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:45:42,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:42,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:45:42,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:45:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:43,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:43,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:45:43,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:43,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-27 18:45:43,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:43,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:43,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:43,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:45:43,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:43,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:45:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:43,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:43,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:43,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:45:43,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:43,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 18:45:43,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:43,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:43,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:45:43,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:45:43,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:43,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-27 18:45:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:43,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:43,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:43,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:45:43,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:43,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 18:45:43,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:43,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:43,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 18:45:43,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:43,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 818 backedges. 357 proven. 70 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2020-10-27 18:45:44,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898366423] [2020-10-27 18:45:44,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:44,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:45:44,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873596739] [2020-10-27 18:45:44,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:45:44,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:44,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:45:44,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:45:44,171 INFO L87 Difference]: Start difference. First operand 13053 states and 15742 transitions. Second operand 7 states. [2020-10-27 18:45:51,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:51,669 INFO L93 Difference]: Finished difference Result 26831 states and 32689 transitions. [2020-10-27 18:45:51,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:45:51,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 710 [2020-10-27 18:45:51,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:51,722 INFO L225 Difference]: With dead ends: 26831 [2020-10-27 18:45:51,722 INFO L226 Difference]: Without dead ends: 14121 [2020-10-27 18:45:51,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:45:51,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14121 states. [2020-10-27 18:45:52,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14121 to 13763. [2020-10-27 18:45:52,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13763 states. [2020-10-27 18:45:52,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13763 states to 13763 states and 16515 transitions. [2020-10-27 18:45:52,093 INFO L78 Accepts]: Start accepts. Automaton has 13763 states and 16515 transitions. Word has length 710 [2020-10-27 18:45:52,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:52,095 INFO L481 AbstractCegarLoop]: Abstraction has 13763 states and 16515 transitions. [2020-10-27 18:45:52,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:45:52,095 INFO L276 IsEmpty]: Start isEmpty. Operand 13763 states and 16515 transitions. [2020-10-27 18:45:52,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2020-10-27 18:45:52,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:52,127 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:45:52,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:45:52,128 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:52,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:52,129 INFO L82 PathProgramCache]: Analyzing trace with hash 312010534, now seen corresponding path program 1 times [2020-10-27 18:45:52,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:52,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264837381] [2020-10-27 18:45:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:52,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:52,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:54,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:54,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:57,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:57,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 769 [2020-10-27 18:45:57,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:45:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-27 18:45:57,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 18:45:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:45:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:57,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:57,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:57,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:57,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:57,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:57,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:45:57,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:57,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:57,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:57,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:57,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:57,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:57,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:57,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:57,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:45:57,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:57,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 18:45:57,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:57,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:57,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:57,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:45:57,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:57,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:45:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:57,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:58,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:58,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:45:58,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:58,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-27 18:45:58,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:58,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:58,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:45:58,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:45:58,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:58,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:45:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:58,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:58,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:58,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:45:58,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:58,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 18:45:58,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 18:45:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:58,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:58,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 18:45:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:58,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:58,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:58,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:45:58,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:58,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 18:45:58,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 18:45:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:58,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:58,797 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 304 proven. 323 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2020-10-27 18:45:58,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264837381] [2020-10-27 18:45:58,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:58,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:45:58,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567947427] [2020-10-27 18:45:58,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:45:58,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:58,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:45:58,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:45:58,802 INFO L87 Difference]: Start difference. First operand 13763 states and 16515 transitions. Second operand 7 states. [2020-10-27 18:46:04,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:04,806 INFO L93 Difference]: Finished difference Result 31336 states and 38225 transitions. [2020-10-27 18:46:04,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:46:04,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 751 [2020-10-27 18:46:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:04,856 INFO L225 Difference]: With dead ends: 31336 [2020-10-27 18:46:04,856 INFO L226 Difference]: Without dead ends: 13721 [2020-10-27 18:46:04,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:46:04,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13721 states. [2020-10-27 18:46:05,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13721 to 13330. [2020-10-27 18:46:05,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13330 states. [2020-10-27 18:46:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13330 states to 13330 states and 14353 transitions. [2020-10-27 18:46:05,160 INFO L78 Accepts]: Start accepts. Automaton has 13330 states and 14353 transitions. Word has length 751 [2020-10-27 18:46:05,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:05,160 INFO L481 AbstractCegarLoop]: Abstraction has 13330 states and 14353 transitions. [2020-10-27 18:46:05,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:46:05,160 INFO L276 IsEmpty]: Start isEmpty. Operand 13330 states and 14353 transitions. [2020-10-27 18:46:05,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1322 [2020-10-27 18:46:05,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:05,200 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:46:05,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:46:05,200 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:05,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:05,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1206688626, now seen corresponding path program 1 times [2020-10-27 18:46:05,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:05,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382011632] [2020-10-27 18:46:05,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:05,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:05,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:06,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:10,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:10,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1347 [2020-10-27 18:46:10,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:46:10,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 18:46:10,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 679 [2020-10-27 18:46:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:46:10,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:10,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:46:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:10,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:10,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:10,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:46:10,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:10,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:46:10,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:10,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:10,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:10,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:10,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:10,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:46:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:10,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:10,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:10,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 18:46:10,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:10,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 18:46:10,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:10,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:10,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 18:46:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:10,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:10,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:10,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:46:10,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:10,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:46:10,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:10,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:10,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:10,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:10,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 18:46:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:10,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:10,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:10,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 18:46:10,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:10,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:46:10,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:10,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:10,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:10,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:10,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:10,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 18:46:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:10,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:10,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:10,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 18:46:10,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:10,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:46:10,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:10,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:10,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-10-27 18:46:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:10,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:11,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:11,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:46:11,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:11,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 18:46:11,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:11,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:11,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:11,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 18:46:11,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:11,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-27 18:46:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:11,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:11,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:11,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:46:11,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:11,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-27 18:46:11,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:46:11,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:11,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 942 [2020-10-27 18:46:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:11,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:11,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:11,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:46:11,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:11,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:46:11,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:11,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:11,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 18:46:11,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:11,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:11,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1054 [2020-10-27 18:46:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:11,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:11,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:11,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:46:11,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:11,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 18:46:11,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:11,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:11,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 18:46:11,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:11,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3590 backedges. 1122 proven. 323 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2020-10-27 18:46:13,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382011632] [2020-10-27 18:46:13,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:46:13,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:46:13,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160490900] [2020-10-27 18:46:13,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:46:13,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:46:13,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:46:13,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:46:13,119 INFO L87 Difference]: Start difference. First operand 13330 states and 14353 transitions. Second operand 7 states. [2020-10-27 18:46:19,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:19,463 INFO L93 Difference]: Finished difference Result 26662 states and 28726 transitions. [2020-10-27 18:46:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:46:19,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1321 [2020-10-27 18:46:19,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:19,511 INFO L225 Difference]: With dead ends: 26662 [2020-10-27 18:46:19,511 INFO L226 Difference]: Without dead ends: 13675 [2020-10-27 18:46:19,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:46:19,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13675 states. [2020-10-27 18:46:19,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13675 to 13334. [2020-10-27 18:46:19,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13334 states. [2020-10-27 18:46:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13334 states to 13334 states and 14346 transitions. [2020-10-27 18:46:19,774 INFO L78 Accepts]: Start accepts. Automaton has 13334 states and 14346 transitions. Word has length 1321 [2020-10-27 18:46:19,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:19,776 INFO L481 AbstractCegarLoop]: Abstraction has 13334 states and 14346 transitions. [2020-10-27 18:46:19,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:46:19,777 INFO L276 IsEmpty]: Start isEmpty. Operand 13334 states and 14346 transitions. [2020-10-27 18:46:19,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1332 [2020-10-27 18:46:19,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:19,815 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-27 18:46:19,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:46:19,815 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:19,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:19,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1120528326, now seen corresponding path program 1 times [2020-10-27 18:46:19,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:19,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836112334] [2020-10-27 18:46:19,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:20,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:20,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:24,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:24,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:25,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:25,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1355 [2020-10-27 18:46:25,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:46:25,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 18:46:25,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:46:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1076 [2020-10-27 18:46:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-27 18:46:25,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:25,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:46:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:25,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:25,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:46:25,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:25,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:46:25,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:25,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:25,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:46:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:25,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:25,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:25,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 18:46:25,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:25,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 18:46:25,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:25,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:25,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 18:46:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:25,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:25,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:25,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:46:25,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:25,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:46:25,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:25,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:25,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 18:46:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:25,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:25,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:25,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 18:46:25,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:25,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:46:25,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:25,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:25,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 18:46:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:25,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:25,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:25,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:46:25,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:25,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 18:46:25,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:25,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:25,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:25,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:25,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:25,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2020-10-27 18:46:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:25,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:25,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:25,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:46:25,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:25,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 18:46:25,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:25,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:25,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:25,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:25,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 952 [2020-10-27 18:46:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:25,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:25,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:25,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:46:25,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:46:25,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 18:46:25,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:26,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1064 [2020-10-27 18:46:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:26,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:26,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:26,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:26,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:46:26,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:46:26,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-27 18:46:26,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-27 18:46:26,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3302 backedges. 402 proven. 7 refuted. 0 times theorem prover too weak. 2893 trivial. 0 not checked. [2020-10-27 18:46:27,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836112334] [2020-10-27 18:46:27,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:46:27,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:46:27,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902639641] [2020-10-27 18:46:27,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:46:27,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:46:27,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:46:27,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:46:27,510 INFO L87 Difference]: Start difference. First operand 13334 states and 14346 transitions. Second operand 5 states. [2020-10-27 18:46:31,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:31,026 INFO L93 Difference]: Finished difference Result 26327 states and 28347 transitions. [2020-10-27 18:46:31,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:46:31,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1331 [2020-10-27 18:46:31,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:31,070 INFO L225 Difference]: With dead ends: 26327 [2020-10-27 18:46:31,070 INFO L226 Difference]: Without dead ends: 13336 [2020-10-27 18:46:31,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:46:31,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13336 states. [2020-10-27 18:46:31,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13336 to 13334. [2020-10-27 18:46:31,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13334 states. [2020-10-27 18:46:31,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13334 states to 13334 states and 14274 transitions. [2020-10-27 18:46:31,330 INFO L78 Accepts]: Start accepts. Automaton has 13334 states and 14274 transitions. Word has length 1331 [2020-10-27 18:46:31,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:31,333 INFO L481 AbstractCegarLoop]: Abstraction has 13334 states and 14274 transitions. [2020-10-27 18:46:31,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:46:31,334 INFO L276 IsEmpty]: Start isEmpty. Operand 13334 states and 14274 transitions. [2020-10-27 18:46:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1404 [2020-10-27 18:46:31,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:31,381 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 18:46:31,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:46:31,382 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:31,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:31,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1851303230, now seen corresponding path program 1 times [2020-10-27 18:46:31,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:31,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657497500] [2020-10-27 18:46:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:31,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:35,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:35,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:35,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:36,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:36,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1429 [2020-10-27 18:46:36,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:46:36,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5147 [2020-10-27 18:46:36,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1293 [2020-10-27 18:46:36,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 18:46:36,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:36,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:46:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:36,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:36,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:36,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:46:36,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:36,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:46:36,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:36,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:37,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:46:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:37,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:37,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:37,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 18:46:37,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 18:46:37,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:37,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:37,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 18:46:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:37,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:37,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:37,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:46:37,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:37,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:46:37,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:37,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:37,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 18:46:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:37,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:37,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:37,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 18:46:37,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:37,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 18:46:37,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:37,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:37,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:37,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:37,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:37,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 18:46:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:37,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:37,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:37,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:46:37,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:37,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 18:46:37,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:37,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:37,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2020-10-27 18:46:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:37,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:37,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:37,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:46:37,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:37,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 18:46:37,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:37,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:37,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:37,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:37,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:37,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 952 [2020-10-27 18:46:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:37,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:37,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:37,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:46:37,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:37,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:46:37,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:37,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:37,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:37,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:37,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:37,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1064 [2020-10-27 18:46:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:37,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:37,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:37,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:46:37,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:37,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 18:46:37,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:37,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:37,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:37,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-27 18:46:37,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:37,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1279 [2020-10-27 18:46:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:37,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:37,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:37,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:46:37,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:37,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 18:46:37,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:37,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:37,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:37,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 18:46:37,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3858 backedges. 929 proven. 2 refuted. 0 times theorem prover too weak. 2927 trivial. 0 not checked. [2020-10-27 18:46:38,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657497500] [2020-10-27 18:46:38,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:46:38,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:46:38,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207489428] [2020-10-27 18:46:38,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:46:38,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:46:38,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:46:38,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:46:38,872 INFO L87 Difference]: Start difference. First operand 13334 states and 14274 transitions. Second operand 7 states. [2020-10-27 18:46:43,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:43,678 INFO L93 Difference]: Finished difference Result 26333 states and 28216 transitions. [2020-10-27 18:46:43,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:46:43,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1403 [2020-10-27 18:46:43,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:43,721 INFO L225 Difference]: With dead ends: 26333 [2020-10-27 18:46:43,721 INFO L226 Difference]: Without dead ends: 13342 [2020-10-27 18:46:43,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:46:43,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13342 states. [2020-10-27 18:46:43,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13342 to 13336. [2020-10-27 18:46:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13336 states. [2020-10-27 18:46:43,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13336 states to 13336 states and 14051 transitions. [2020-10-27 18:46:43,980 INFO L78 Accepts]: Start accepts. Automaton has 13336 states and 14051 transitions. Word has length 1403 [2020-10-27 18:46:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:43,983 INFO L481 AbstractCegarLoop]: Abstraction has 13336 states and 14051 transitions. [2020-10-27 18:46:43,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:46:43,983 INFO L276 IsEmpty]: Start isEmpty. Operand 13336 states and 14051 transitions. [2020-10-27 18:46:44,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1412 [2020-10-27 18:46:44,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:44,027 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:46:44,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:46:44,028 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:44,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:44,029 INFO L82 PathProgramCache]: Analyzing trace with hash 832779802, now seen corresponding path program 1 times [2020-10-27 18:46:44,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:44,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111054340] [2020-10-27 18:46:44,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:44,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:44,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:49,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:49,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:49,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1437 [2020-10-27 18:46:49,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:46:49,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5226 [2020-10-27 18:46:49,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:49,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:46:49,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1372 [2020-10-27 18:46:49,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 18:46:49,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:50,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:46:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:50,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:50,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:50,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:46:50,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:50,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:46:50,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:50,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:50,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:50,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:50,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:50,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:46:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:50,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:50,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:50,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 18:46:50,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:50,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 18:46:50,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:50,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:50,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 18:46:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:50,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:50,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:50,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:46:50,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:50,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:46:50,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:50,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:50,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:50,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:50,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:50,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 18:46:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:50,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:50,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:50,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 18:46:50,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:50,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:46:50,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:50,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:50,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 18:46:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:50,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:50,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:50,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:46:50,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:50,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 18:46:50,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:50,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:50,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2020-10-27 18:46:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:50,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:50,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:50,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:46:50,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:50,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:46:50,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:50,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:50,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 952 [2020-10-27 18:46:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:50,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:50,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:50,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:46:50,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:50,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:46:50,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:50,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:50,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:50,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:50,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:50,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1064 [2020-10-27 18:46:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:50,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:50,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:50,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 18:46:50,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:50,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-27 18:46:50,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:50,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:50,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:50,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-27 18:46:50,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:51,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:46:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:51,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:51,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:51,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 18:46:51,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:51,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:46:51,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:51,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 18:46:51,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3392 backedges. 375 proven. 7 refuted. 0 times theorem prover too weak. 3010 trivial. 0 not checked. [2020-10-27 18:46:52,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111054340] [2020-10-27 18:46:52,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:46:52,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:46:52,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306974841] [2020-10-27 18:46:52,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:46:52,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:46:52,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:46:52,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:46:52,481 INFO L87 Difference]: Start difference. First operand 13336 states and 14051 transitions. Second operand 8 states. [2020-10-27 18:46:55,711 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-27 18:46:56,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:56,222 INFO L93 Difference]: Finished difference Result 25729 states and 27118 transitions. [2020-10-27 18:46:56,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:46:56,224 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1411 [2020-10-27 18:46:56,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:56,258 INFO L225 Difference]: With dead ends: 25729 [2020-10-27 18:46:56,258 INFO L226 Difference]: Without dead ends: 12655 [2020-10-27 18:46:56,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:46:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12655 states. [2020-10-27 18:46:56,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12655 to 12651. [2020-10-27 18:46:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12651 states. [2020-10-27 18:46:56,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12651 states to 12651 states and 13273 transitions. [2020-10-27 18:46:56,497 INFO L78 Accepts]: Start accepts. Automaton has 12651 states and 13273 transitions. Word has length 1411 [2020-10-27 18:46:56,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:56,499 INFO L481 AbstractCegarLoop]: Abstraction has 12651 states and 13273 transitions. [2020-10-27 18:46:56,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:46:56,499 INFO L276 IsEmpty]: Start isEmpty. Operand 12651 states and 13273 transitions. [2020-10-27 18:46:56,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1502 [2020-10-27 18:46:56,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:56,531 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:46:56,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:46:56,531 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:56,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:56,532 INFO L82 PathProgramCache]: Analyzing trace with hash -160688834, now seen corresponding path program 1 times [2020-10-27 18:46:56,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:56,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723516541] [2020-10-27 18:46:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:56,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:56,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:57,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:58,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:01,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:01,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1527 [2020-10-27 18:47:01,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:47:01,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 18:47:01,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:01,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:01,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1076 [2020-10-27 18:47:01,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 18:47:01,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:01,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:47:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:01,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:01,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:01,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:47:01,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:01,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:47:01,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:01,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:01,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:01,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:01,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:01,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:47:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:01,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:02,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:02,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 18:47:02,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:02,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:47:02,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:02,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:02,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 18:47:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:02,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:02,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:02,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:47:02,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:02,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:47:02,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:02,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:02,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:02,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:02,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:02,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 18:47:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:02,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:02,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:02,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 18:47:02,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:02,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 18:47:02,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:02,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:02,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 18:47:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:02,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:02,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:02,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:47:02,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:02,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 18:47:02,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:02,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:02,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:02,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:02,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:02,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2020-10-27 18:47:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:02,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:02,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:02,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:47:02,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:02,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 18:47:02,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:02,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:02,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:02,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:02,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:02,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 952 [2020-10-27 18:47:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:02,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:02,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:02,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:47:02,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:02,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 18:47:02,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:02,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:47:02,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:02,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 18:47:02,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:02,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1064 [2020-10-27 18:47:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:02,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:02,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:02,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:47:02,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:02,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 18:47:02,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:47:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:47:02,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:03,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1279 [2020-10-27 18:47:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:03,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:03,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:03,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 18:47:03,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:03,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 18:47:03,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-27 18:47:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:03,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4375 backedges. 1413 proven. 169 refuted. 0 times theorem prover too weak. 2793 trivial. 0 not checked. [2020-10-27 18:47:04,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723516541] [2020-10-27 18:47:04,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:47:04,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:47:04,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207031101] [2020-10-27 18:47:04,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:47:04,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:47:04,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:47:04,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:47:04,294 INFO L87 Difference]: Start difference. First operand 12651 states and 13273 transitions. Second operand 7 states. [2020-10-27 18:47:10,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:47:10,211 INFO L93 Difference]: Finished difference Result 25298 states and 26549 transitions. [2020-10-27 18:47:10,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:47:10,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1501 [2020-10-27 18:47:10,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:47:10,243 INFO L225 Difference]: With dead ends: 25298 [2020-10-27 18:47:10,243 INFO L226 Difference]: Without dead ends: 12992 [2020-10-27 18:47:10,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:47:10,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12992 states. [2020-10-27 18:47:10,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12992 to 12314. [2020-10-27 18:47:10,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12314 states. [2020-10-27 18:47:10,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12314 states to 12314 states and 12903 transitions. [2020-10-27 18:47:10,471 INFO L78 Accepts]: Start accepts. Automaton has 12314 states and 12903 transitions. Word has length 1501 [2020-10-27 18:47:10,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:47:10,473 INFO L481 AbstractCegarLoop]: Abstraction has 12314 states and 12903 transitions. [2020-10-27 18:47:10,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:47:10,473 INFO L276 IsEmpty]: Start isEmpty. Operand 12314 states and 12903 transitions. [2020-10-27 18:47:10,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1573 [2020-10-27 18:47:10,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:47:10,509 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:47:10,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:47:10,509 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:47:10,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:47:10,510 INFO L82 PathProgramCache]: Analyzing trace with hash 609960416, now seen corresponding path program 1 times [2020-10-27 18:47:10,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:47:10,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736946270] [2020-10-27 18:47:10,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:47:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:10,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:10,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:11,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:14,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:15,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:15,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1600 [2020-10-27 18:47:15,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:47:15,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 18:47:15,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:15,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1149 [2020-10-27 18:47:15,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 18:47:15,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:15,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:47:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:15,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:15,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:47:15,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:15,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:47:15,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:15,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:15,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:47:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:15,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:16,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:16,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 18:47:16,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:16,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 18:47:16,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:16,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:16,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:16,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:16,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:16,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 18:47:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:16,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:16,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:16,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:47:16,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:16,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:47:16,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:16,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:16,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:16,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:16,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:16,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 18:47:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:16,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:16,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:16,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 18:47:16,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:16,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:47:16,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:16,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:16,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:16,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:16,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:16,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 18:47:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:16,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:16,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:16,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:47:16,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:16,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:47:16,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:16,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:16,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2020-10-27 18:47:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:16,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:16,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:16,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:47:16,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:16,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 18:47:16,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:16,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:16,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:16,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:16,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:16,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 952 [2020-10-27 18:47:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:16,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:16,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:16,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:47:16,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:16,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:47:16,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:16,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:16,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:16,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:16,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:16,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1064 [2020-10-27 18:47:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:16,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:16,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:16,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:47:16,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:16,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:47:16,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:47:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:16,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 18:47:16,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:16,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1135 [2020-10-27 18:47:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:16,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:16,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:16,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:47:16,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:16,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-27 18:47:16,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:16,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:16,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:47:16,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:47:16,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:16,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1350 [2020-10-27 18:47:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:16,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:16,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:16,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 18:47:16,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:16,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 18:47:16,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:16,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:16,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-27 18:47:16,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:16,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 1542 proven. 169 refuted. 0 times theorem prover too weak. 3284 trivial. 0 not checked. [2020-10-27 18:47:18,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736946270] [2020-10-27 18:47:18,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:47:18,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:47:18,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142364239] [2020-10-27 18:47:18,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:47:18,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:47:18,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:47:18,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:47:18,657 INFO L87 Difference]: Start difference. First operand 12314 states and 12903 transitions. Second operand 7 states. [2020-10-27 18:47:23,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:47:23,232 INFO L93 Difference]: Finished difference Result 24291 states and 25472 transitions. [2020-10-27 18:47:23,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:47:23,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1572 [2020-10-27 18:47:23,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:47:23,262 INFO L225 Difference]: With dead ends: 24291 [2020-10-27 18:47:23,262 INFO L226 Difference]: Without dead ends: 12322 [2020-10-27 18:47:23,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:47:23,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12322 states. [2020-10-27 18:47:23,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12322 to 12314. [2020-10-27 18:47:23,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12314 states. [2020-10-27 18:47:23,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12314 states to 12314 states and 12891 transitions. [2020-10-27 18:47:23,477 INFO L78 Accepts]: Start accepts. Automaton has 12314 states and 12891 transitions. Word has length 1572 [2020-10-27 18:47:23,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:47:23,479 INFO L481 AbstractCegarLoop]: Abstraction has 12314 states and 12891 transitions. [2020-10-27 18:47:23,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:47:23,479 INFO L276 IsEmpty]: Start isEmpty. Operand 12314 states and 12891 transitions. [2020-10-27 18:47:23,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1903 [2020-10-27 18:47:23,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:47:23,524 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-27 18:47:23,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 18:47:23,526 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:47:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:47:23,527 INFO L82 PathProgramCache]: Analyzing trace with hash -2114748284, now seen corresponding path program 1 times [2020-10-27 18:47:23,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:47:23,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388076315] [2020-10-27 18:47:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:47:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:23,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:23,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:24,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:28,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:28,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1934 [2020-10-27 18:47:28,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:47:28,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-27 18:47:28,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1076 [2020-10-27 18:47:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:47:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:29,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:47:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:29,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:29,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:29,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:47:29,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:29,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:47:29,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:29,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:29,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:29,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:29,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:29,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:47:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:29,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:29,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:29,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 18:47:29,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:29,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 18:47:29,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:29,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:29,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 18:47:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:29,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:29,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:29,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:47:29,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:29,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:47:29,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:29,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:29,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:29,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:29,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:29,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 18:47:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:29,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:29,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:29,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 18:47:29,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:29,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:47:29,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:29,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:29,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 18:47:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:29,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:29,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:29,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:47:29,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:29,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:47:29,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:29,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:29,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2020-10-27 18:47:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:29,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:29,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:29,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:47:29,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:29,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 18:47:29,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:29,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:29,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 952 [2020-10-27 18:47:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:29,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:29,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:29,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:47:29,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:29,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 18:47:29,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:47:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 18:47:29,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:29,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1064 [2020-10-27 18:47:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:29,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:29,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:29,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:47:29,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:29,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 18:47:29,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:29,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:29,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:47:29,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:47:29,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:29,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1135 [2020-10-27 18:47:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:29,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:30,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:30,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 18:47:30,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:30,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 18:47:30,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:30,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:30,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-27 18:47:30,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:30,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:30,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1389 [2020-10-27 18:47:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:30,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:30,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 18:47:30,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:30,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 18:47:30,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:30,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:30,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-27 18:47:30,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:30,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:30,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1620 [2020-10-27 18:47:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:30,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:30,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 18:47:30,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:30,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 18:47:30,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:30,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:30,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-27 18:47:30,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:30,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:30,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1778 [2020-10-27 18:47:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:30,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:30,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:30,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:47:30,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:30,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:47:30,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:30,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:30,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 18:47:30,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:30,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:32,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7299 backedges. 1101 proven. 274 refuted. 0 times theorem prover too weak. 5924 trivial. 0 not checked. [2020-10-27 18:47:32,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388076315] [2020-10-27 18:47:32,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:47:32,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:47:32,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652630929] [2020-10-27 18:47:32,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:47:32,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:47:32,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:47:32,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:47:32,417 INFO L87 Difference]: Start difference. First operand 12314 states and 12891 transitions. Second operand 7 states. [2020-10-27 18:47:37,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:47:37,138 INFO L93 Difference]: Finished difference Result 24967 states and 26155 transitions. [2020-10-27 18:47:37,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:47:37,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1902 [2020-10-27 18:47:37,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:47:37,163 INFO L225 Difference]: With dead ends: 24967 [2020-10-27 18:47:37,163 INFO L226 Difference]: Without dead ends: 12998 [2020-10-27 18:47:37,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:47:37,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12998 states. [2020-10-27 18:47:37,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12998 to 12316. [2020-10-27 18:47:37,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12316 states. [2020-10-27 18:47:37,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12316 states to 12316 states and 12902 transitions. [2020-10-27 18:47:37,364 INFO L78 Accepts]: Start accepts. Automaton has 12316 states and 12902 transitions. Word has length 1902 [2020-10-27 18:47:37,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:47:37,366 INFO L481 AbstractCegarLoop]: Abstraction has 12316 states and 12902 transitions. [2020-10-27 18:47:37,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:47:37,366 INFO L276 IsEmpty]: Start isEmpty. Operand 12316 states and 12902 transitions. [2020-10-27 18:47:37,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2032 [2020-10-27 18:47:37,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:47:37,410 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-27 18:47:37,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 18:47:37,411 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:47:37,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:47:37,411 INFO L82 PathProgramCache]: Analyzing trace with hash -922249530, now seen corresponding path program 1 times [2020-10-27 18:47:37,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:47:37,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654235156] [2020-10-27 18:47:37,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:47:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:37,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:38,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking...